Compare Thunder VPN and Gemmy AI: Which App is the Best?
Thunder VPN is a highly-rated free VPN service with 100M+ downloads, offering fast connections and minimal ads, making it one of the better free VPN options available. | 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. |
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| Our Rating Prod Apps's expert review score for each app, based on hands-on testing and research. | 7.2 Winner in this category | 6.9 |
| Total users Total active users across all major browsers: Chrome, Edge, Firefox, and Safari. | 0 | 0 |
| Total ratings Total number of user ratings received across all supported browsers. | 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 |
| Android User rating and stats for the app on Android browser. |  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. | 7.5 Thunder VPN delivers a solid foundation of core VPN features that meet the basic needs of most users. The app's feature set is straightforward and focused on simplicity rather than advanced functionality, which aligns well with its target audience of casual VPN users. Key features we found most valuable include:
However, Thunder VPN lacks many advanced features that users expect from premium VPN services. There's no kill switch to protect against connection drops, no split tunneling to route specific apps through the VPN, and no specialized servers for streaming or torrenting. The server selection is limited compared to premium alternatives. While the core features work well for basic privacy and geo-unblocking needs, power users will find the feature set limiting. For users who need advanced features like kill switches, split tunneling, or specialized servers, alternatives like Proton VPN offer more comprehensive free tiers, while NordVPN provides extensive advanced features for premium users. We rate features at 7.5 out of 10—good for basic VPN needs with better user experience than most free alternatives, but lacking the depth that serious users require. Winner in this category | 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. Winner in this category |
| Performance Prod Apps's expert score for the 'Performance' aspect of each app. | 6.5 Thunder VPN's performance presents a mixed picture that reflects the challenges of maintaining a free VPN service. While the app can deliver fast connections when working properly, reliability issues significantly impact the overall performance experience. Performance strengths include:
However, significant performance issues undermine the user experience:
User reviews reveal a pattern of performance issues, with many users praising the app's speed when it works but complaining about frequent disconnections. The app's focus on user experience over aggressive monetization may be impacting server quality and maintenance. For users seeking reliable performance, alternatives like Proton VPN offer more consistent free performance with better server maintenance, while NordVPN provides premium performance with dedicated servers and better reliability guarantees. We rate performance at 6.5 out of 10—good speeds when working but undermined by frequent connection drops and stability issues that create an inconsistent user experience. 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. Winner in this category |
| Design Prod Apps's expert score for the 'Design' aspect of each app. | 8.0 Thunder VPN's design philosophy centers on simplicity and user experience, which works exceptionally well for its target audience. The interface is clean, intuitive, and focuses on functionality rather than flashy design elements. Design strengths we observed include:
The design experience is significantly better than competitors like Turbo VPN and Now VPN, with much less advertising interruption. Users consistently praise the app's clean interface and ease of use, making it one of the most user-friendly free VPNs available. While the core interface design is solid, some users report that the app requires keeping the window open to maintain connections, which can be inconvenient. However, this is a minor issue compared to the overall design quality. For users who value a clean, uninterrupted interface, Thunder VPN offers one of the best free experiences available. Alternatives like Proton VPN offer similar design quality with better privacy protection, while Windscribe VPN provides a comparable free experience with fewer restrictions. We rate design at 8.0 out of 10—excellent design principles with minimal advertising that creates a genuinely user-friendly experience. Winner in this category | 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. | 8.0 Thunder VPN's value proposition is significantly better than most free VPNs, offering a genuinely useful free service with minimal advertising and good performance. The app provides excellent value for users who can tolerate occasional connection issues. Value strengths include:
The free tier's value is significantly better than most free VPNs, with minimal advertising and good performance. However, some limitations affect the overall value:
The premium pricing is reasonable ($1.99-$59.99), but the connection stability issues may not justify the upgrade for many users. Premium VPN services like NordVPN and Surfshark VPN offer more comprehensive features and better reliability for similar or lower costs. For users seeking genuine value, Thunder VPN offers one of the best free experiences available. Alternatives like Proton VPN offer a more generous free tier with better privacy protection, while Windscribe VPN provides a more reliable free experience with fewer restrictions. We rate value for money at 8.0 out of 10—excellent value for a free VPN with minimal advertising and good performance, though connection stability issues limit the overall experience. Winner in this category | 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. | 7.0 Thunder VPN excels in basic usability with its one-tap connection approach, making it one of the most accessible VPN apps for beginners. The core functionality is genuinely simple and requires no technical knowledge to operate effectively. Usability strengths include:
However, the ease of use is somewhat undermined by connection stability issues. Users report that the app requires keeping the window open to maintain connections, which can be inconvenient. Additionally, frequent connection drops require reconnection, which interrupts the user experience. While the core interface is genuinely easy to use, the connection stability issues compromise the overall user experience. For users seeking a truly hassle-free VPN experience, alternatives like Proton VPN offer a cleaner free tier with better connection stability, while Windscribe VPN provides a more reliable free experience. We rate ease of use at 7.0 out of 10—excellent core usability with good interface design, but undermined by connection stability issues that require user intervention. | 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. Winner in this category |
| Security & Privacy Prod Apps's expert score for the 'Security & Privacy' aspect of each app. | 6.0 Thunder VPN's security and privacy practices present a mixed picture that raises some concerns for privacy-conscious users. While the app claims to offer secure connections and privacy protection, several factors undermine confidence in its privacy commitments. Security strengths include:
However, some privacy concerns emerge from user feedback and business practices:
User reviews reveal mixed experiences, with some users praising the app's privacy features while others express concerns about data collection. The lack of transparency about the service's data handling practices further undermines trust. For users who prioritize privacy and security, alternatives like Proton VPN offer Swiss-based privacy protection with independent audits and transparency reports, while Windscribe VPN provides Canadian privacy protection with more transparent data handling practices. We rate security and privacy at 6.0 out of 10—basic security features present but concerns about data handling, jurisdiction, and transparency that compromise trust in the service. | 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. | Thunder VPN represents one of the better free VPN options available, offering a genuinely useful service with minimal advertising and good performance. While the app delivers on its core promise of free, unlimited VPN access with simple one-tap connection, connection stability issues and the need to keep the app window open create some usability concerns. The app's exceptional popularity (100M+ downloads, 4.8-star rating) reflects genuine demand for a user-friendly free VPN service, and many users do find value in its basic functionality. However, the frequent connection drops and stability issues suggest that the free model may be impacting server quality and maintenance. For users who can tolerate occasional connection issues, Thunder VPN provides a functional free VPN with minimal advertising. For users seeking a more reliable free VPN experience, Proton VPN offers better privacy protection and connection stability, while Windscribe VPN provides a more reliable free tier with fewer restrictions. For those willing to pay for premium features, NordVPN and Surfshark VPN offer more comprehensive solutions with better reliability and privacy guarantees. | 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 | ||
