Compare ChatGPT, DeepSeek AI, Grok, and Gemmy AI: Which App is the Best?
The official ChatGPT mobile app brings OpenAI's powerful AI assistant to your pocket with voice conversations, image generation, and seamless cross-device sync. | DeepSeek AI is a completely free AI assistant powered by a 600B+ parameter model, offering high-quality responses for coding, writing, and general questions without any subscription fees or usage limits. | Grok is xAI's AI assistant that combines real-time information access with a witty personality, offering text generation, image creation, and seamless X platform integration. | Gemmy AI is a Gemini-powered chat assistant that helps with creativity, productivity, and daily tasks through smart conversations and helpful prompts. | |||||||||
| Key Features A summary of the most important features offered by each app. |
|
|
|
| ||||||||
| Our Rating Prod Apps's expert review score for each app, based on hands-on testing and research. | 8.1 Winner in this category | 7.8 | 7.3 | 6.9 | ||||||||
| Total users Total active users across all major browsers: Chrome, Edge, Firefox, and Safari. | 0 | 0 | 0 | 0 | ||||||||
| Total ratings Total number of user ratings received across all supported browsers. | 0 | 0 | 0 | 0 | ||||||||
| Average rating Average user rating across all browsers, calculated from available store ratings. | — ⭐ | — ⭐ | — ⭐ | — ⭐ | ||||||||
| Entry Level Price The minimum price required to start using the app. "Free" means a free tier is available. | Free | Free | Free | Free | ||||||||
| Android User rating and stats for the app on Android browser. |  Downloads | Downloads | Downloads | Downloads | ||||||||
| iOS User rating and stats for the app on iOS browser. |  | | | | ||||||||
| Features Prod Apps's expert score for the 'Features' aspect of each app. | 9.5 ChatGPT has a lot of cool features that make it useful for pretty much anyone. It's not just a chat app - it can do a bunch of different things. What ChatGPT Does Best 1. Smart Chatting: This is where ChatGPT really shines. It's better at having natural conversations than any other AI app we've tried. You can ask it anything from "What's the weather like?" to "Help me plan a trip to Japan" and it just gets it. It remembers what you talked about earlier in the conversation, so it feels like talking to someone who's actually listening. You can have long conversations and it keeps track of everything. 2. Voice Chat: This feature is really cool. You just tap the microphone button and start talking. The app shows a little wave animation so you know it's listening. It's like talking on the phone, but with an AI. We tested this a lot and it works really well. It understands what you're saying most of the time, and responds quickly. Great for when you're driving or cooking and can't type. 3. Making Pictures: You can tell ChatGPT to make pictures for you. Just describe what you want to see, and it creates an image. This costs money though - it's only in the paid version. We tried asking it to make pictures of things like:
The results were pretty good. Not perfect, but definitely usable. 4. Works Everywhere: The best part is that your conversations follow you around. Start a chat on your phone, then open it on your computer and it's all there. Really handy when you switch between devices. 5. Photo Help: You can take a picture of something and ask ChatGPT what it is. We tried this with:
It's pretty good at figuring things out. The main downside is that the free version is pretty limited. You only get the older AI model, which isn't as smart as the paid version. A lot of users complained about this - they want the good stuff without paying. Winner in this category | 8.5 DeepSeek AI has a solid set of features that make it a great alternative to paid AI assistants. It does more than just answer questions - it's like having a smart friend who can help with pretty much anything. Here's what we really liked: 1. The AI is really smart This thing is powered by a massive AI model with over 600 billion parameters. That's a lot of brainpower! It can handle complex questions, coding problems, and analytical tasks really well. 2. It shows its work Unlike most AI assistants, DeepSeek actually shows you how it thinks through problems. This is especially helpful when you're learning something new or debugging code. It breaks everything down step by step. 3. It's completely free No catch, no hidden fees, no premium tiers. You get unlimited access to this powerful AI without paying anything. That's pretty rare these days. 4. It works everywhere Whether you're on Android or iOS, the experience is the same. No need to worry about compatibility issues. The main downsides:
But for basic AI chat and coding help, it's really solid. We give features an 8.5 - it does the core stuff really well, but could use some extra bells and whistles. | 8.0 Grok's feature set is impressive and comprehensive. The real-time information access is what really sets it apart - you can ask about current events and get up-to-the-minute answers that other AI assistants simply can't provide. The multimodal capabilities are particularly strong, with image generation that produces striking visuals and the ability to analyze uploaded images providing valuable insights. The integration with X platform is seamless and adds significant value for users already invested in that ecosystem. Grok's personality features, including its witty responses and rebellious tone, make interactions more engaging than typical AI assistants. Key Features:
However, we noticed that some advanced features are locked behind the X Premium+ subscription, which may limit accessibility for casual users. | 7.5 Gemmy AI packs in enough features to make it a solid AI assistant. Beyond just chatting with AI, it offers tools for creative work and productivity that actually come in handy. What Gemmy AI does well: 1. Gemini AI Integration: This is where Gemmy shines. It uses Google's advanced AI model for conversations that actually make sense. You can ask questions, get creative help, and receive detailed responses powered by one of the best AI models around. When we tested it, we could easily chat about various topics - from creative writing to technical questions. The AI responses were generally helpful and well-structured, though we did notice some outdated information here and there. 2. Prompt Library: This is a standout feature. There's a huge collection of pre-made prompts for different situations. Need help writing a story? Crafting social media content? Brainstorming ideas? There's likely a prompt to get you started. The prompts are organized well and easy to browse. We found this really useful when we needed inspiration for creative projects or wanted to try different writing styles. 3. Multi-language Support: Gemmy works in multiple languages, making it accessible to users worldwide. You can chat with the AI in your preferred language without any complicated setup. This feature works smoothly, and we tested it with several languages. The AI keeps its conversational quality across different languages, which is pretty impressive. 4. Save & Share: You can easily save important conversations and share insights with others. This is great for collaborative projects or when you want to keep track of useful AI responses for later. The save feature works reliably, and sharing is straightforward. We found this helpful when working on projects that needed input from multiple people. 5. Creative Content Help: Whether you need help writing stories, poems, or social media content, Gemmy can assist with various creative tasks. The AI provides suggestions and can help you develop ideas further. We tested this with several creative projects and found the AI quite helpful in generating ideas and providing structure for creative writing. 6. Regular Updates: The prompt library gets updated regularly with fresh content, so you always have access to current and relevant prompts. What's missing:
That's why we give features a 7.5 out of 10. The core AI functionality is strong, but the free tier limitations and occasional accuracy issues keep it from scoring higher. | ||||||||
| Performance Prod Apps's expert score for the 'Performance' aspect of each app. | 8.0 The app runs smoothly most of the time. You can chat with the AI without any delays or problems, and it loads quickly. The voice chat works really well too. There's almost no delay between when you speak and when the AI responds. The voice recognition is accurate, and the conversation feels natural and smooth. However, we did run into some problems during busy times. The app can get slow or even stop working when lots of people are using it at once. This mostly affects free users since paid users get priority access. The sync feature works great - your conversations show up quickly on all your devices. Even with long chat histories, the app stays responsive and doesn't slow down. One area that could be better is the image generation. It can take a while to create images, especially for complicated requests. This makes sense given how much work it takes, but it can be frustrating if you're in a hurry. The app doesn't drain your battery too much, though using voice chat will use more power than just typing. Overall, it runs well and doesn't cause problems with your phone. Winner in this category | 6.5 Performance is a bit hit or miss with DeepSeek AI. When it's working well, it's great. When it's not, it can be frustrating. When everything is running smoothly, the app responds quickly and works without any lag. The AI processes your questions fast and gives good answers. It works consistently across different devices, so you get the same experience whether you're on Android or iOS. What works well:
The problem is that the servers seem to get overloaded a lot. You'll often see "server busy" messages, and sometimes the app just doesn't work at all. The recent drop in ratings from 4.2 to 3.98 stars suggests this is an ongoing issue. Common issues users report:
It's not the app's fault - it's more about server capacity and infrastructure. But it definitely affects how useful the app is. We give performance a 6.5 - good when it works, but the reliability issues are a real problem. | 8.0 The extension performs seamlessly, allowing you to interact with Grok without any lag or interruptions. The app handles text generation efficiently, and the image generation feature produces results quickly while maintaining good quality. The integration with X platform works smoothly, with minimal latency when accessing real-time information. Performance Highlights:
We did notice occasional performance variations, particularly during peak usage times, but these were infrequent and didn't significantly impact the user experience. The app maintains good stability across different devices and network conditions. The multimodal features, including image analysis and generation, perform consistently well, though some users have reported occasional delays with complex requests. Overall, the performance meets expectations for a modern AI assistant application. Winner in this category | 6.5 The app works okay in most situations, letting you chat with the AI without major interruptions. However, we noticed some performance issues that could affect the user experience. The basic functionality works fine - you can send messages and get responses from the AI without significant delays. The prompt library loads quickly, and the save and share features work reliably without performance problems. Performance strengths:
Performance issues:
However, we found several performance concerns that significantly impact the user experience. Multiple users specifically mentioned that the app is "very slowly" or has slow movement, indicating consistent performance issues. One user noted "Very Slowly moment this apps 😴😴" which suggests the performance problems are noticeable enough to affect user satisfaction. Some users also reported that the app can be resource-intensive, particularly when processing complex AI requests. The performance issues seem to be worse on older devices or when the app is handling multiple requests at once. That's why we give performance a 6.5 out of 10. While the app maintains basic functionality, the reported speed issues and performance inconsistencies prevent it from scoring higher. | ||||||||
| Design Prod Apps's expert score for the 'Design' aspect of each app. | 9.0 The app looks clean and simple, which makes it easy to use right away. We really like how it focuses on the conversation instead of trying to look fancy. What we love most is how easy it is to tell who said what:
Simple, but it works really well. The voice chat interface is really nice too. When you're talking, you see a little wave animation that moves with your voice. It's a small thing, but it makes you feel like the app is actually listening. Getting around the app is straightforward. There's a simple menu button that gives you access to settings and your chat history without cluttering up the main screen. Some people said the app looks a bit plain compared to other AI apps. We get that - it's not flashy, but that's actually what makes it work so well. You can focus on talking to the AI without getting distracted by fancy graphics. Winner in this category | 7.5 The design is clean and straightforward. Nothing fancy, but it gets the job done without getting in your way. We like how simple it is to use. The chat interface looks familiar - just like any messaging app you've used before. The text is easy to read, and the buttons are where you'd expect them to be. It works well on both phones and tablets, and the layout adjusts nicely to different screen sizes. The app doesn't try to be flashy, which is actually kind of refreshing. What we liked:
The downside? It's pretty basic looking. No cool animations or fancy themes. Some people might find it boring, but we think it's actually better this way - less distraction, more focus on the AI responses. We give design a 7.5 - it's functional and clean, but could use a bit more personality. | 7.0 The design is clean and functional, following modern mobile app conventions. The interface is intuitive with a familiar chat-based layout that users will find immediately recognizable. The dark theme with X's signature styling creates a cohesive brand experience that feels premium and polished. The app's visual hierarchy is well-structured, making it easy to distinguish between different types of content - text responses, generated images, and interface elements. Design Highlights:
However, we found that the design could benefit from more customization options and that the interface occasionally feels somewhat basic compared to more feature-rich competitors. The minimalist approach works well for the core functionality but may leave power users wanting more advanced interface options. | 7.0 The design is clean and functional - you can start using it right away without much fuss. We liked the chat-based interface and how the prompt library is organized. Users seem to love the intuitive chat interface and the well-organized prompt system. It's easy to navigate and find what you need quickly. The app also looks good on mobile devices, making it simple to access your conversations and prompts on your phone. Design highlights:
Design issues:
That's why we give design a 7.0 out of 10. The interface is functional and accessible, but could use more refined visual design and better user onboarding. | ||||||||
| Value for Money Prod Apps's expert score for the 'Value for Money' aspect of each app. | 6.0 ChatGPT has a free version that you can use without paying anything. It gives you basic chat features with the older AI model, which is fine for simple questions and casual conversations. But the $20/month price for the good features is pretty steep. The paid version gives you:
That's a lot of money for an app that many people think should be free. Some users in the reviews were really frustrated about this. They got used to the free features and then found out the good stuff costs money. The paid version is worth it if you use AI a lot for work, school, or creative projects. The better AI model gives much more detailed and helpful responses, and the image generation can be really useful. We think it's most valuable for people who need AI help regularly. If you just want to ask the occasional question, the free version is probably fine. But if you want to do serious work with AI, the paid features are actually worth the money. The voice features and syncing work on both free and paid versions, which is nice. But the way they limit the free version to push people toward paying feels a bit aggressive. | 9.5 This is where DeepSeek AI really shines. It's completely free, and we mean completely free. No ads, no premium features, no hidden costs. What you get for free:
Compare this to ChatGPT Plus at $20/month or other paid AI services, and it's pretty amazing. You're getting similar quality for zero cost.
The only reason it's not a perfect 10 is that some people might want extra features like voice input, image generation, or plugins that you'd get with paid services. But for basic AI chat and coding help, you can't beat the value. We give value for money a 9.5 - it's basically free AI assistance that works really well. Winner in this category | 6.0 Grok's value proposition is somewhat mixed. The requirement for X Premium+ subscription ($16/month) creates a significant barrier to entry, especially when compared to free alternatives like ChatGPT or other AI assistants. However, for users already invested in the X ecosystem, Grok provides unique value through its real-time information access and distinctive personality. Value Breakdown:
The premium features, including advanced image generation and priority access, do offer tangible benefits, but the cost may be prohibitive for casual users. We found that the value is most apparent for power users who can leverage the real-time information capabilities and advanced features regularly. For occasional users or those primarily interested in basic AI assistance, the subscription requirement may not justify the cost compared to free alternatives. | 6.0 You can use Gemmy AI for free without signing up, which gives you access to basic AI chat functionality. However, the free tier comes with pretty tight limitations that might not provide great value for regular users. To really enjoy all the benefits of Gemmy AI, including unlimited access to advanced AI capabilities and custom prompts, you'll need to upgrade to premium features through in-app purchases ranging from $4.99 to $36.99 per item. Pricing breakdown:
Value concerns:
The pricing structure is where we found some concerns. The freemium model severely limits free users with daily question restrictions, which many users found frustrating and insufficient for regular use. Several users specifically mentioned that the free tier limitations are too restrictive, with one user noting they should "increase the limit of questions per day for whoever did not take the premium." That's why we give value for money a 6.0 out of 10. While the core AI functionality is valuable, the restrictive free tier and premium pricing structure limit the overall value proposition for many users. | ||||||||
| Ease of Use Prod Apps's expert score for the 'Ease of Use' aspect of each app. | 9.0 This might be the easiest AI app to use. It works right away - no complicated setup or learning curve. Downloading it is simple, and it works on both iPhones and Android phones. Once you open it, you can just start typing or tap the microphone to talk. That's it. The voice feature is really easy to use:
The chat interface looks like any other messaging app you've used - WhatsApp, Facebook Messenger, etc. So it feels familiar right away. Your conversations are organized clearly, and you can easily find old chats. Even though it has lots of features, nothing feels overwhelming. The advanced stuff like making images is there if you want it, but it doesn't get in the way of basic chatting. The only confusing part is figuring out what's free and what costs money. The app could do a better job of showing you what you're missing out on with the free version. That's why we gave it a 9 out of 10. It's super easy to use, though some of the fancier features take a little time to figure out. Winner in this category | 8.0 This might be the easiest AI assistant we've ever used. Seriously, you can start using it right away without any setup. Download the app, open it, and start typing. That's it. No account needed, no complicated settings to figure out. It works the same way on both Android and iOS, so if you switch phones, you won't have to relearn anything. What makes it so easy:
The only annoying thing is that sometimes you get "server busy" messages when the app is overloaded. And there's not much guidance for new users on how to get the best results. But overall, it's really user-friendly. We give ease of use an 8.0 - it's super simple to use, though the occasional server issues can be frustrating. | 8.0 Grok is remarkably easy to use, especially for users already familiar with chat-based AI interfaces. The onboarding process is straightforward, and the app's core functionality is immediately accessible. The chat interface is intuitive, with clear input areas and well-organized response layouts. We particularly loved how the app handles different types of interactions - text conversations, image generation, and image analysis - all through a unified interface that doesn't overwhelm users. The integration with X platform is seamless, making it easy for existing X users to access Grok. What Makes It Easy:
However, we did notice that some advanced features might not be immediately discoverable for new users, and the subscription requirement could be clearer during the initial setup process. | 7.5 Gemmy AI works right out of the box - no complicated setup needed. Installing it is simple, and you can easily add it to both Android and iOS devices. Once installed, the chat interface is ready whenever you want to talk to the AI. The whole process is intuitive and easy to figure out. If you need help, the prompt library has plenty of examples that guide you through the features. With so many powerful features, Gemmy might seem a bit overwhelming at first, but everything clicks into place pretty quickly. The chat interface, in particular, is easy to use and much simpler than some other AI assistants we've tested. You can start typing immediately and get responses from the AI without any complicated setup. However, we noticed some usability issues that affect the overall experience. Several users mentioned that the app seemed complicated at first, suggesting the onboarding process could be more user-friendly. There's definitely a learning curve, though it's not steep - but it might put off users who expect everything to work immediately. We also found that the premium features and limitations aren't clearly explained upfront, which can be frustrating when users hit usage limits unexpectedly. The aggressive promotion of premium features throughout the interface can also be distracting. That's why we give ease of use a 7.5 out of 10. The app is generally intuitive once you get familiar with it, but could benefit from better onboarding and clearer communication about limitations and premium features. | ||||||||
| Security & Privacy Prod Apps's expert score for the 'Security & Privacy' aspect of each app. | 7.0 We gave ChatGPT a 7 out of 10 for security and privacy. It uses standard security practices, which is good, but there are some things to be aware of. The good news is that OpenAI is pretty open about how they handle your data. You can easily find their privacy policy in the app, and they explain what they do with your information. However, there are some concerns. The app collects a lot of your personal data:
OpenAI says they use this to make their AI better, but that means they're storing and potentially using your private conversations. We noticed that some users were worried about the sync feature. Since your conversations are stored on OpenAI's servers (not just on your phone), they can access everything you've said. This is what makes the cross-device sync work, but it also means your chats aren't really private. The voice chat feature is convenient, but it also means your voice is being recorded and stored. You should know that your voice conversations could be used to train the AI. OpenAI does give you some control - you can delete your chat history and opt out of some data collection. But these options are kind of hidden and not easy to find. Winner in this category | 7.0 Privacy is a mixed bag with DeepSeek AI. On the plus side, you don't need an account to use it, which means they're not collecting your email or personal info. What we liked:
The downside? It's an AI assistant, so it has to process and store your conversations to work. They probably use your chats to improve their AI model, which is pretty standard for these apps. They don't sell your data to third parties, which is good. But you should know that your conversations are being processed and stored somewhere. It's more private than apps that require accounts and collect lots of personal info, but less private than apps that keep everything on your device. We give privacy a 7.0 - reasonable for an AI assistant, but not perfect. Winner in this category | 7.0 Grok's security and privacy practices are generally solid, with xAI implementing standard industry practices for data protection. The app requires appropriate permissions and follows modern security protocols for user authentication and data transmission. However, we noted some concerns about data sharing practices, particularly regarding the integration with X platform and potential data usage for training purposes. Security & Privacy Features:
Users should be aware that conversations and interactions may be used to improve the AI model, which is common practice but worth noting for privacy-conscious users. The app does provide basic privacy controls, but we found the privacy policy could be more transparent about specific data usage and retention policies. Overall, the security measures appear adequate for typical use cases, though users with high privacy requirements may want to review the detailed privacy terms. Winner in this category | 7.0 For Security & Privacy, we give Gemmy AI a solid 7.0/10. The app claims to prioritize user privacy and security, which is a good foundation for any AI application. The app says it's built with robust security measures to protect user data, and we didn't find any reports of major security incidents in user reviews. This suggests the basic security implementation is working as intended. Security strengths:
Privacy concerns:
While the app claims to have security measures in place, there's limited transparency about what specific protections are actually implemented. Users have no clear way to understand how their conversations and data are being handled, stored, or shared. That's why we give security and privacy a 7.0 out of 10. While the app makes positive claims about privacy protection, the lack of transparency and clear communication about data handling practices prevents a higher rating. Winner in this category | ||||||||
| Conclusion A summary of our findings and final thoughts for each app. | ChatGPT is still the best AI chat app out there. It's really good at conversations and has lots of useful features. The free version is okay for basic stuff, but if you want the good features, you'll need to pay for the premium version. | DeepSeek AI stands out as a compelling free alternative to paid AI assistants, offering impressive capabilities powered by its advanced 600B+ parameter model. While it has some performance and accuracy limitations, the fact that it's completely free makes it an excellent choice for users who want powerful AI assistance without the cost. The app particularly shines for coding and technical tasks, with many users praising its ability to provide detailed, step-by-step solutions. For those willing to work around occasional server issues and minor accuracy concerns, DeepSeek AI delivers exceptional value. | Grok stands out as a unique AI assistant with its real-time information access and distinctive personality. While the requirement for X Premium+ subscription may be a barrier for some users, those who invest in the platform will find a powerful AI tool that combines humor, intelligence, and current awareness in an engaging package. | After testing Gemmy AI ourselves, we can say it's a decent AI assistant that does what it promises. The Google Gemini integration works well and provides real value for creative tasks and general productivity. The app is easy to use and has enough features to be useful for writing, brainstorming, and creative projects. The free version works fine for basic needs, but the limits are pretty tight if you want to use it regularly. That said, the freemium model with its restrictive free usage and the performance issues we ran into might not work for everyone. The app shows potential but could use some work on speed and more generous free limits. If you're looking for a basic AI assistant and don't mind the limitations, Gemmy AI is worth a try. But if you need better performance and more generous usage limits, you might want to look elsewhere. | ||||||||
| Our Recommendation | ||||||||||||
