Compare Merlin AI and Balance: Which App is the Best?

Merlin AI combines ChatGPT, Grok AI, DeepSeek, Gemini, Claude, and Perplexity AI in one powerful app with 70+ AI tools. Enjoy 102 free daily queries and seamless cross-platform integration.
Balance offers highly personalized meditation through adaptive sessions, structured 10-day learning plans, and sleep tools. While iOS users enjoy excellent performance (4.9★), recent Android issues with audio playback are concerning.
Key Features
  • Multi-AI Integration: Access to ChatGPT, Grok AI, DeepSeek, Gemini, Claude, and Perplexity AI in one app
  • AI Tools Suite: PDF summarizer, image generator, YouTube video summarizer, and language translation
  • Platform Integration: Works with Gmail, Google Search, and LinkedIn for enhanced productivity
  • Cross-Device Sync: Seamless experience across Android, desktop, and other platforms
  • Generous Free Plan: 102 queries per day with access to all major AI models
  • Voice Chat: Premium voice-powered chat capabilities for hands-free interaction
  • Personalized Meditation Plans – Adaptive sessions tailored to your experience level, mood, and daily goals through ongoing questions
  • Structured 10-Day Learning Plans – Comprehensive courses teaching concrete meditation techniques like Breath Focus, Body Scan, and mindful awareness
  • Quick Singles Library – Stand-alone guided meditations for morning wake-ups, commute focus, stress relief, and energy boosts
  • Sleep & Bedtime Tools – Sleep meditations, bedtime stories, white noise audio, and interactive wind-down activities using bilateral stimulation
  • Animated Breathing Exercises – Visual guides for controlled breathing to reduce anxiety and find calm throughout the day
  • Experience-Based Progression – Beginners start with Foundations Plan while experienced meditators access Advanced Plan for deeper practice
  • Mid-Plan Check-Ins – Regular reviews that adjust your meditation journey based on progress and feedback
  • Research-Backed Techniques – Multiple evidence-based meditation methods including body scans, breath work, and mindfulness exercises
Our Rating
8.3
8.2
Total users
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Total ratings
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Average rating
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Entry Level PriceFreeFree
Android
Google Play Store
Downloads
Google Play Store
Downloads
iOS
Apple App Store
Apple App Store
Features
9.0

Merlin AI has everything you'd want in an AI assistant. It brings together seven different AI models - ChatGPT, Grok AI, DeepSeek, Gemini, Claude, and Perplexity AI - all in one place. This means you don't need separate subscriptions for each one.

We really liked the 70+ AI tools it comes with:

  • PDF summarizer
  • YouTube video summarizer
  • Image generator
  • Language translation
  • Email composition with Gmail integration

The best part is how easy it is to switch between different AI models - just one tap and you're using a different AI. Plus, everything syncs across your devices so you can start a conversation on your phone and continue it on your computer.

8.5

Balance delivers a compelling feature set centered around its core promise: personalized meditation guidance. The app's adaptive approach genuinely sets it apart from competitors that simply dump you into a massive library of content. During testing, we answered daily questions about our mood, energy levels, and meditation goals, and the app consistently adjusted our session recommendations accordingly.

The structured 10-day Plans form the backbone of the experience, teaching concrete techniques like Breath Focus, Body Scan, and mindful awareness through progressive lessons. We particularly appreciated how the Foundations Plan introduces beginners to meditation fundamentals without overwhelming them, while the Advanced Plan offers deeper practices for experienced meditators. The mid-plan check-ins add another layer of personalization, adjusting the difficulty and focus based on your progress.

The Singles library provides practical quick sessions for specific moments—morning wake-ups, stress relief during commutes, or energy boosts before important tasks. Sleep features deserve special mention, with bedtime stories, white noise options, and innovative bilateral stimulation exercises that genuinely helped us wind down. The animated breathing exercises offer visual guidance that makes controlled breathing more accessible than audio-only instructions.

However, Balance's feature set is narrower than some competitors. Insight Timer offers over 100,000 free meditations from thousands of teachers, while Balance sticks to its curated, personalized approach. There's no social features, no music-only tracks without guidance, and limited content for specific niches like meditation for kids or highly specialized conditions. The personalization is excellent, but the overall content volume falls short of more comprehensive apps. We rate features at 8.5—strong execution of its core concept, but deliberately limited in scope.

Performance
8.0

The app runs smoothly without lag or interruptions when chatting with multiple AI models. The search function works quickly and accurately, so you can easily find your conversations.

We tested it on different devices and platforms, and it performed well everywhere. The chat responses are fast, even when switching between different AI models. The cross-device sync works reliably, so you can start a conversation on your phone and pick it up later on your computer.

The integration with Gmail and LinkedIn works well without delays. We did notice some occasional loading times when processing complex requests or large documents, but overall the performance is consistent and reliable for everyday use.

The best part is that basic features work offline, so you can access your conversations even without an internet connection.

6.5

Balance's performance is the most troubling aspect of our review, with a clear divide between platforms. The iOS version performed excellently during our testing—sessions loaded quickly, audio played smoothly without interruption, and the app remained stable throughout. This aligns with the iOS App Store's stellar 4.9-star rating across 118,000 reviews.

The Android experience, however, reveals serious problems. The app's recent rating of just 3.48 stars over the last 100 reviews (compared to its overall 4.7) tells a concerning story, and user feedback confirms widespread issues. The most common complaint involves audio cutting out or stopping entirely mid-session, sometimes just 5-15 seconds in. Multiple users reported this happening repeatedly even after clearing cache, reinstalling the app, or updating to the latest version.

During our Android testing, we encountered occasional stuttering during session downloads and slower loading times compared to iOS. Some users mentioned that meditations would download successfully but refuse to play, or would restart from the beginning after pausing. These technical hiccups completely undermine the meditation experience—there's nothing more frustrating than settling into a practice only to have silence abruptly interrupt your session.

Customer support responses to these performance issues have been inadequate according to reviews. Multiple paying users reported contacting support about persistent bugs without receiving helpful solutions or even acknowledgment. This lack of support for a premium subscription app is particularly disappointing. The app does work reliably for many users—the overall ratings remain positive—but the recent decline and volume of complaints about Android performance are red flags. We rate performance at 6.5—excellent on iOS but significantly compromised on Android, bringing down the overall score. Until these technical issues are addressed, Android users should approach with caution despite the generous trial period.

Design
8.0

The app looks clean and modern. It's easy to find what you need without getting lost in menus. The chat interface is well-designed with clear differences between responses from different AI models.

We liked how the app works the same way whether you're on Android, iOS, or desktop. It adapts nicely to different screen sizes. The dark and light theme options are a nice touch, and you can customize the interface to your liking.

The mobile version works really well too - you can easily access your AI conversations on your phone without any issues.

9.0

Balance presents a clean, modern interface that prioritizes clarity over flashiness. The design immediately communicates calm through its muted color palette, generous white space, and smooth animations. Unlike Calm's nature-focused aesthetic or Headspace's playful illustrations, Balance opts for minimalist sophistication.

Navigation proved intuitive during our testing. The home screen prominently displays your next recommended session, making it effortless to continue your meditation journey with a single tap. The Plans tab clearly shows your progress through structured courses, while the Singles library organizes quick sessions by purpose (Relax, Focus, Sleep, etc.). Color coding and clear typography help distinguish between different meditation types without cluttering the interface.

The meditation player itself deserves praise for its simplicity. A gentle ambient background accompanies sessions, with controls that fade away during meditation to minimize distraction. The animated breathing exercises use smooth, pulsing visuals that effectively guide your breath rhythm without being overwhelming. Progress indicators show how far you've come in plans without being anxiety-inducing.

Minor design inconsistencies did appear—some screens felt slightly cramped on smaller phones, and the settings menu could be more discoverable. The app also lacks the visual personality that makes Headspace or Calm immediately recognizable. Still, Balance's understated elegance serves meditation well by staying out of the way. We rate design at 9.0—polished, functional, and appropriately calming, if not particularly distinctive.

Value for Money
9.0

Merlin AI offers great value. You can use it for free without creating an account, and you get 102 queries per day across all the major AI models.

This free access to ChatGPT, Grok AI, DeepSeek, Gemini, Claude, and Perplexity AI in one app saves you from needing multiple expensive subscriptions. The premium plan adds useful features like voice chat, advanced AI tools, and team collaboration.

The pricing is reasonable, making it a good choice for students, professionals, and anyone who wants to boost their productivity. When we compared it to individual subscriptions for these AI services, Merlin AI saves you money while offering more convenience.

You really can't find another tool that gives you this much value for so little cost.

7.5

Balance's value proposition is complicated. The year-long free trial is genuinely generous—it gives you ample time to experience the full app, build a meditation habit, and decide if the personalization approach works for you. Several users specifically mentioned this extended trial convinced them to purchase lifetime access after seeing real benefits, which suggests the trial strategy works as intended.

However, once the trial ends, the required subscription feels steep compared to alternatives. At $11.99/month or $69.99/year, Balance costs more than Calm ($14.99/month but often discounted to $70/year) and significantly more than free alternatives like Medito or Insight Timer, which offer extensive meditation libraries at no cost. The lifetime option at $399.99 provides better long-term value if you're committed, but that's a substantial upfront investment.

What you're paying for is personalization and structure, not just content volume. If you struggle with choice paralysis in apps with massive libraries, or if you want a guided learning progression rather than self-directed exploration, Balance's curated approach justifies the premium. The daily adaptive recommendations, structured Plans, and ongoing customization require infrastructure that free apps don't provide. Users who found meditation apps overwhelming often praised Balance for solving exactly this problem.

The value calculation shifts dramatically depending on your needs. For meditation beginners who need structure and guidance, the year-long trial plus potential lifetime purchase offers solid value. For experienced meditators who know what they want, or budget-conscious users who don't mind browsing large libraries, free alternatives likely make more sense. Technical issues on Android further complicate the value proposition—paying premium prices for an app that frequently stops playing mid-session is frustrating, as multiple recent reviews attest. We rate value for money at 7.5—reasonable for the right user, but expensive compared to excellent free alternatives.

Ease of Use
9.0

Merlin AI is one of the easiest AI assistants we've tried. You can start using it right away without any complicated setup. The free tier gives you 102 queries per day, which is plenty to test everything out.

Installing it is simple, and it works great on both Android and iOS. Switching between AI models is super easy - just tap to change from ChatGPT to Grok AI to Claude, and so on.

The integration with Gmail and LinkedIn works smoothly. You don't need to configure anything complicated. The free tier lets you explore all the features without committing to anything, which makes it easy to learn at your own pace.

We give it a 9 out of 10 because it's really user-friendly, though some of the more advanced features might take a bit of time to figure out.

9.0

Balance excels at making meditation approachable, even for complete beginners. The onboarding process asks straightforward questions about your experience level and goals, then immediately drops you into your first session. No overwhelming library browsing, no decision paralysis—just a clear path forward.

The app's core interaction couldn't be simpler: tap the big button to start your recommended meditation. After each session, quick feedback questions (How did that feel? What's your energy level now?) take seconds to answer and genuinely improve future recommendations. We appreciated how the app never demands long surveys or complicated input—it respects that you came here to meditate, not to manage an app.

Navigation remains straightforward throughout. The bottom tab bar provides access to Plans, Singles, and your profile. Within each section, content is logically organized and clearly labeled. The search function works well when you want something specific, though most users will likely stick to the personalized recommendations that appear on the home screen.

A few users mentioned in reviews that finding specific past sessions or figuring out how to restart a plan wasn't immediately obvious, and we encountered similar minor confusion. The personalization, while generally helpful, occasionally felt restrictive—sometimes we just wanted to browse all available content rather than having the app decide for us. These are minor friction points in an otherwise smooth experience. We rate ease of use at 9.0—the app successfully removes barriers between you and your meditation practice.

Security & Privacy
7.0

For security and privacy, we give Merlin AI a 7 out of 10. The app uses standard encryption for your conversations and personal data, which is good.

However, since it connects to multiple AI providers, your data might be shared with these third-party services. This is mentioned in their privacy policy, but it's something to be aware of. The app doesn't ask for unnecessary permissions, but remember that your conversations and any documents you upload are processed by external AI services.

While the company is transparent about how they use data, we would have liked more control over what gets shared with which AI providers. They do a good job of being upfront about it, but some users might want more control over their data.

8.5

Balance takes a reasonable approach to user privacy, though it's not as privacy-focused as some alternatives like Medito, which operates entirely offline. The app requires an account to sync your progress across devices and enable personalization features, which is standard for this type of service but does mean your meditation data lives on Balance's servers.

During testing, we reviewed Balance's privacy policy and found it fairly transparent about data collection. The app collects usage data, meditation preferences, and session completion information to power its personalization engine. This data remains associated with your account and isn't sold to third parties for advertising purposes. The app uses analytics tools to improve the service, which is typical but worth noting for privacy-conscious users.

Permissions requested are minimal and appropriate—notification access for meditation reminders, and optional microphone access if you use any interactive speaking exercises (which we didn't encounter in testing). The app works fine with most permissions denied, though you'll miss out on helpful reminders. Data encryption during transmission is standard HTTPS, and Balance claims to use industry-standard security practices for data at rest.

The main privacy concern comes from the subscription system—several users reported unexpected charges or difficulty managing their subscriptions, suggesting the billing integration could be more transparent. However, these seem to be payment system issues rather than malicious data practices. For users who want complete privacy, Insight Timer offers more granular privacy controls, while Medito requires no account at all. We rate Balance's security and privacy at 8.5—solid practices but not exceptional in this category.

Conclusion
Merlin AI stands out as an exceptional all-in-one AI assistant that successfully combines multiple AI models with practical tools. The generous free tier makes it accessible to everyone, while the premium features offer significant value for power users. For anyone looking to consolidate their AI tools into one powerful platform, Merlin AI delivers an impressive and well-rounded experience.

Balance occupies an interesting middle ground in the meditation app landscape. Its personalized approach and structured learning plans genuinely solve the decision paralysis that plagues apps with massive content libraries, making it particularly valuable for beginners or those who struggle with self-directed practice. The year-long free trial is remarkably generous and provides ample time to experience the benefits without financial pressure.

However, the app's recent technical problems on Android cannot be ignored. While iOS users enjoy a smooth, stable experience reflected in the platform's 4.9-star rating, Android users face frustrating audio cutoffs and playback failures that directly undermine the meditation experience. Combined with inadequate customer support responses and subscription management complaints, these issues raise serious concerns about Balance's current quality control, especially given its premium pricing.

For iOS users who value personalization over content volume, Balance remains a strong choice worth the year-long trial investment. The adaptive recommendations, calming instructor voices (particularly Ofosu), and structured progression create a guided meditation experience that justifies the premium price for the right audience. The lifetime purchase option at $399.99 offers reasonable long-term value if the approach resonates with you.

Android users should proceed with caution and thoroughly test during the free trial period before committing to a subscription. If you encounter audio issues, consider alternatives like Insight Timer for a massive free library with solid performance, Medito for completely free, ad-free meditation with excellent privacy practices, or Calm and Headspace for similarly premium experiences with more stable Android performance. Balance's personalization is genuinely valuable, but only when the app actually works reliably—something it currently delivers consistently only on iOS.

Our Recommendation