Compare Loop Habits and Serenity: Which App is the Best?

A free, privacy-focused habit tracker that combines powerful features with elegant simplicity. In our review, we found it offers everything needed for effective habit building without the clutter of unnecessary features or ads.
Serenity is a meditation app with 4.8 stars on Android (4.95 recent) and 4.9 on iOS, offering a free 7-day beginner course and sleep meditations. Known for its soothing narrator voice, simple interface, and no-account-required access, it provides excellent value with flexible pricing—buy content packs individually or unlock everything via subscription.
Key Features
  • Flexible Habit Tracking: In our review, we found that Loop supports various tracking frequencies including daily, weekly, and monthly goals (like "3 times per week" or "once every other week").
  • Detailed Analytics: The app provides comprehensive statistics and graphs that clearly visualize your progress over time, including habit strength calculations and historical data.
  • Customizable Widgets: During testing, we particularly appreciated the variety of home screen widgets that allow quick habit tracking without opening the app.
  • Privacy-Focused: All data is stored locally on your device with no account required. The app works completely offline and includes export options to CSV and SQLite formats.
  • Smart Reminders: Each habit can have its own notification schedule, with the option to make notifications "sticky" until you respond.
  • Clean Interface: We found the minimalist design keeps you focused on building habits without unnecessary distractions.
  • 7-Day Beginner Course – Free, structured audio program that teaches meditation fundamentals step-by-step, perfect for building confidence
  • Sleep Meditation Library – Dedicated sleep guides with relaxation techniques, peaceful music, and tranquil sounds to help you fall asleep naturally
  • Stress Relief Sessions – Targeted meditations using relaxation and mindfulness techniques to calm anxiety and soothe the mind
  • Quick Meditations – Short sessions for practicing skills or finding calm during busy days, ideal for quick mental resets
  • Daily Meditations – Different meditation content each day to help maintain regular practice and keep sessions fresh
  • No Account Required – Start meditating immediately after installation with no sign-up, login, or personal information needed
  • Progress Tracking & Challenges – Stay motivated by completing challenges, unlocking free sessions, and monitoring your meditation journey with stats and graphs
  • Flexible Purchasing – Choose between one-time purchases for specific content packs or unlock everything with a subscription—no forced subscription model
Our Rating
9.3
9.0
Total users
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Entry Level PriceFreeFree
Android
Google Play Store
Downloads
Google Play Store
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iOS
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Apple App Store
Features
8.5

Loop offers an impressive set of core features that focus on effective habit tracking without unnecessary bloat. The standout feature is the sophisticated habit strength calculation that considers both your streaks and overall consistency.

Key features we thoroughly tested include:

  • Flexible Tracking Options: The app supports daily, weekly, and monthly goals with customizable frequencies
  • Detailed Statistics: Multiple graph types show your progress over time
  • Custom Notifications: Individual reminders for each habit with "sticky" notification option
  • Home Screen Widgets: Various widget styles for quick habit tracking
  • Data Management: Export to CSV and SQLite formats for backup or analysis
  • Calendar View: Easy access to historical data and habit completion

However, we did notice some limitations. The app lacks the ability to categorize habits into groups or folders, which can become unwieldy with many habits. There's also no way to track multiple completions of the same habit within a day, and the weekly scheduling could be more flexible. For users who need comprehensive scheduling and timer functionality, HabitNow provides more advanced organizational features.

Despite these minor drawbacks, the features present are thoughtfully implemented and work reliably. We're giving it an 8.5 for features - it excels at core functionality while maintaining simplicity, though there's room for some organizational improvements.

8.5

Serenity delivers a well-rounded meditation experience without overwhelming complexity. The feature set focuses on what matters for building a consistent practice, and executes this effectively.

Standout features:

  • 7-Day Beginner Course: This structured program excels at teaching newcomers. It builds progressively, covering fundamentals without rushing or leaving you behind. Multiple reviewers specifically mentioned gaining confidence through this course
  • Sleep Meditation Library: These guides work remarkably well. Using relaxation techniques, peaceful music, and nature sounds, the sessions help you fall asleep naturally. Long-term users frequently cite sleep content as their primary reason for staying
  • Daily Meditations: Fresh content each day maintains variety and prevents staleness. The continuity between sessions creates genuine progress
  • Quick Meditations: Short sessions for busy days or immediate stress relief. Perfect when you need a mental reset but lack 20 minutes
  • Progress Tracking: Stats, graphs, and challenge completion provide motivation without being pushy. The app won't nag you about missing days—several users appreciated this approach
  • Stress Relief & Anxiety Tools: Targeted meditations for specific challenges like anxiety, panic attacks, low self-esteem, anger, and frustration. One user with severe panic attacks mentioned quickly finding needed support during episodes

There are limitations. While the free version generously offers over 2 hours of content, it restricts access to advanced programs. Some users wanted more variety in the free tier, though most agreed the basics provided solid value. The app lacks organizational features found in complex apps—no folders or advanced filtering. This simplicity is intentional and generally works in its favor.

Features earn 8.5 out of 10. Core meditation functionality is excellent, the beginner course stands out, and sleep content delivers genuine value. It doesn't match the content volume of Calm or the completely free library of Medito, but what's present is thoughtfully implemented and effective.

Performance
9.5

Throughout our testing, Loop demonstrated exceptional performance with near-instant response times and minimal resource usage. The app's efficiency is particularly impressive given its extensive tracking and visualization capabilities.

Key performance aspects:

  • Quick Startup: Launches rapidly and loads data instantly
  • Smooth Navigation: No lag when switching between views or scrolling through history
  • Low Resource Usage: Minimal battery drain and memory consumption
  • Reliable Widgets: Home screen widgets update promptly without issues

The 9.5 rating acknowledges Loop's outstanding optimization and reliability. This performance excellence places Loop among the top performers in the category, alongside HabitNow which also achieves strong performance ratings for its comprehensive feature set.

9.0

Serenity performs reliably. Across thousands of recent reviews, technical issues are rarely mentioned—stark contrast to apps like Headspace where performance problems dominate feedback.

Performance strengths:

  • Stability: The app works consistently without crashes. Users with years of regular use don't report reliability issues
  • Smooth Experience: Reviews specifically mention "smooth experience" with "no irritating pop-ups" interrupting sessions
  • Always Works: One user: "Always works correctly and super easy to use." This consistency matters for daily practice
  • Quick Loading: Sessions start promptly. No significant lag or loading delays mentioned
  • Reliable Playback: Audio quality is good, playback works smoothly. The soothing voice wouldn't matter if technical issues interfered

Long-term reliability is impressive. Users with 3+ years of consistent use continue praising the app. One mentioned using it twice daily for years without issues. Another: "3 years later and I'm still using this app. Truly saved my life."

The app handles offline mode well. Progress tracking and stats work reliably. Reminders arrive as scheduled. Basic functions work consistently—which should be standard but, as competitor reviews show, often isn't.

The only minor performance consideration? Ads in the free version, though users say they're "seamlessly integrated" and not disruptive. No mentions of ad-related lag or crashes.

Performance earns 9.0 out of 10. Serenity simply works, consistently, for years. In a market where major apps struggle with crashes and slowdowns, this reliability is a competitive advantage. The app delivers without technical friction.

Design
9.0

Loop's Material Design implementation stands out for its thoughtful balance between aesthetics and functionality. The interface uses color purposefully to highlight important information while maintaining a clean, distraction-free environment.

Design highlights:

  • Clear Data Visualization: Graphs and progress indicators are both beautiful and easy to interpret
  • Consistent Patterns: Common actions follow familiar Android design patterns
  • Effective Use of Space: Information density is well-balanced across all screens
  • Responsive Layout: Adapts smoothly to different screen sizes and orientations

While some might find the design austere, this intentional simplicity helps users focus on their habits. The 9.0 rating reflects excellent execution of Material Design principles with room for minor visual refinements. For users who prioritize visual appeal, HabitKit offers a more elegant GitHub-style visualization that some find more motivating.

9.0

Serenity's design philosophy is refreshingly simple—clean interface, clear navigation, zero clutter. After testing meditation apps that try to do too much visually, this straightforward approach felt intentional and calming.

Design strengths:

  • Clean Interface: Everything is laid out logically. Users consistently describe it as "simple" and "easy to navigate"—not exciting adjectives, but exactly what a meditation app needs
  • Foundation Section Structure: The foundation course builds day-by-day, creating continuity and progress. This storytelling approach maintains engagement
  • Minimal Distractions: No unnecessary animations or flashy elements. One user specifically noted they "barely notice the ads" because they're seamlessly integrated
  • Intuitive Organization: Meditation categories are clearly separated—sleep guides, stress relief, quick meditations, daily content. Finding what you need takes seconds

The design doesn't try to impress with visual flair, and that's its strength. Where Headspace has become cluttered with features and constant UI changes that frustrate users, Serenity maintains consistency. It looks professional without feeling corporate or sterile.

Several reviewers compared Serenity's interface favorably to Calm and Headspace. The simpler design made it easier to use, and the lack of visual complexity helps maintain focus on practice rather than navigation.

Design earns 9.0 out of 10. The minimalist approach works exceptionally well. It won't win design awards for innovation, but it excels at creating a calm, distraction-free environment that supports meditation.

Value for Money
10

Loop Habit Tracker delivers exceptional value as a completely free, ad-free, and open-source application. During our testing, we were consistently impressed by the quality and completeness of features available without any monetary commitment.

Value highlights:

  • No Premium Tier: All features available to everyone
  • Zero Ads: Clean, uninterrupted experience
  • Regular Updates: Continuous improvements without subscription
  • No Hidden Costs: Complete functionality without in-app purchases

The perfect 10.0 rating reflects Loop's outstanding commitment to providing a premium-quality habit tracker completely free of charge. This makes it an excellent choice for users who want high-quality features without spending money, though Habitive also offers unlimited free habits for those who need more flexibility.

8.5

Serenity offers strong value, especially compared to subscription-only meditation apps. The pricing model provides genuine flexibility that respects different budgets.

The free tier is legitimately useful:

  • Complete 7-Day Course: Over 2 hours of quality beginner content at no cost. This alone provides real value for building a meditation foundation
  • Additional Free Content: Several meditation sessions available beyond basics. Users mentioned unlocking more free content by completing challenges
  • No Account Required: Access everything free without payment information upfront. No "free trial" requiring a credit card

Paid options are flexible:

  • One-Time Purchases: Buy specific meditation packs (€3.79 - €149.99). Unlike subscriptions, you own purchases permanently
  • "Unlock Everything" Subscription: Available for full access but not forced. One user mentioned a 6-month option for sleep meditations
  • Student Discounts: Developers offer reduced rates for students, showing consideration for different financial situations

Multiple users compared Serenity favorably to Calm. One review stated: "I like Calm but this app is a much better deal if you are low on money. The meditation quality is great." Another: "This app is by far the best deal for a simple meditation app."

The main value limitation? Medito offers completely free, ad-free meditation with no purchases required. If budget is your primary concern, Medito's perfect 10.0 value rating can't be beaten. However, Serenity's flexible pricing—pay only for what you want—beats subscription-only alternatives.

Value for money earns 8.5 out of 10. Free content is genuinely useful, purchasing options are flexible and fairly priced, and quality justifies the cost. While not free like Medito, Serenity delivers considerably better value than premium subscription apps.

Ease of Use
9.2

Loop Habit Tracker excels in providing a straightforward, intuitive experience without sacrificing functionality. Our testing revealed an app that anyone can start using effectively within minutes.

Standout usability features:

  • Simple Habit Creation: Adding new habits takes just a few taps with clear, logical options
  • Efficient Daily Use: Main screen provides quick access to all habits with one-tap completion
  • Smart Notifications: Reminders can be managed directly from notifications without opening the app
  • Intuitive History: Calendar view makes it easy to review and edit past entries
  • Accessible Statistics: Complex data presented in easily digestible visual formats

The 9.2 rating reflects the app's excellent usability, with only minor deductions for the initial learning curve of advanced features like custom schedules and the habit strength system. For users who want an even simpler setup process, Habitive offers a 3-click setup that's hard to beat.

9.5

Serenity is remarkably easy to use. This came up repeatedly in reviews and matched our experience—the app just works, immediately, without friction.

What makes it so accessible:

  • No Account Required: Install, open, start meditating. No sign-up forms, no email verification, no password creation. Users specifically praised this as a major advantage
  • Immediate Access: The free 7-day course is available from the first launch. No trials requiring payment information, no bait-and-switch tactics
  • Straightforward Technique: Meditation instructions are clear and easy to follow. Users described the approach as "straightforward" and effective
  • Simple Navigation: Finding sessions takes seconds. The organization makes sense—no hunting through confusing menus
  • Gentle Reminders: Notifications are available but not aggressive. The app won't guilt you about missed days or broken streaks

Ease of use particularly shines for beginners. Multiple first-time meditators mentioned Serenity helped them establish regular practice when other apps felt overwhelming. One user switching from another "popular meditation app" (likely Headspace) specifically cited Serenity's simpler layout as crucial during anxiety attacks—they could find what they needed quickly without confusion.

Even purchasing is straightforward if you choose to upgrade. Buy specific content packs rather than committing to a full subscription. Flexibility and control.

Ease of use earns 9.5 out of 10. This is one of the app's greatest strengths. Serenity removes barriers between you and meditation, making it genuinely effortless to build a practice. The 0.5 deduction? Perfection doesn't exist—but this comes close to frictionless usability.

Security & Privacy
9.8

Privacy is where Loop truly shines. As an open-source app with a strict privacy-first approach, it sets a high standard for data protection in habit tracking apps.

Key privacy features:

  • Zero Data Collection: No personal information gathered or transmitted
  • Offline Operation: Functions fully without internet access
  • Local Storage: All data stays on your device
  • Minimal Permissions: Only requests essential Android permissions
  • Transparent Code: Open-source nature allows security verification

The 9.8 rating acknowledges Loop's exceptional privacy practices, with the tiny deduction only because some users might want optional cloud backup. This privacy focus puts Loop in excellent company with HabitKit, which also achieves a 9.8 rating for its offline-first approach.

9.5

Serenity takes a privacy-friendly approach that stands out. The biggest advantage is simple: no account required means no personal data collection for basic use.

Privacy strengths:

  • No Mandatory Account: Use all free features without providing email, name, or any personal information. This eliminates most data collection concerns
  • Minimal Permissions: The app only requests essential permissions for notifications and audio. No suspicious background activity or unnecessary data access
  • Offline Functionality: Downloaded sessions work without internet, providing convenience and privacy
  • Transparent Pricing: Purchases go through Google Play or App Store—no separate payment system collecting extra information

Ads in the free version are the main privacy consideration. Users say they're "seamlessly integrated," and they appear to be standard in-app advertising rather than highly targeted data collection. Still, ads typically involve some tracking—worth noting if you're privacy-conscious.

For maximum privacy, Medito sets the gold standard with open-source, ad-free, account-free approach. Serenity's practices are solid though—better than subscription apps requiring accounts and more transparent than many competitors.

Security and privacy earn 9.5 out of 10. The no-account approach provides excellent privacy. Ads in the free version are the only minor concern, and even that appears handled reasonably. For most users, Serenity's privacy practices are more than adequate.

Conclusion

Loop Habit Tracker proves that simplicity and power can coexist perfectly in a habit tracking app. Its thoughtful design and robust feature set create an experience that's both sophisticated and accessible to everyone.

The app's commitment to user privacy and freedom sets it apart - being completely free, open-source, and offline-first. The distraction-free interface and reliable performance make it a pleasure to use daily, while comprehensive analytics keep you motivated.

While there's room for improvements in areas like habit categorization and cloud sync, the core functionality is exceptional. With an average rating of 9.3 across our review categories, Loop stands out as a premium-quality app that puts users first.

For anyone seeking a reliable, privacy-focused habit tracker that emphasizes substance over flash, Loop Habit Tracker is our top recommendation. However, if you need unlimited free habits without any restrictions, Habitive offers the best free experience, while HabitKit provides superior design aesthetics for users willing to pay for premium features.

Serenity delivers what a meditation app should: effective guidance, reliable performance, and genuine accessibility. The 4.8-star rating with 54.2K reviews isn't inflated—the app works well, the narrator's voice is soothing, and the interface stays out of your way. The rising recent rating (4.95 stars) shows quality improving, not declining.

What makes Serenity valuable is a rare combination of factors. The free 7-day beginner course provides real value without requiring an account or payment info. Sleep meditations work effectively for long-term users. Flexible pricing respects your budget—buy what you want instead of committing to a subscription. The app maintains this quality over years without the technical deterioration affecting competitors.

It's not perfect. Free content is limited beyond basics, ads are present, and the values-focused approach in some sessions won't appeal to everyone. Want completely free meditation? Medito is your choice. Want celebrity narrators and massive libraries? Calm has that (at subscription cost). Need therapy integration? Headspace provides it (though with current technical issues).

For straightforward, effective meditation with excellent beginner support and reasonable pricing, Serenity hits the sweet spot. The simplicity is intentional. The focus on fundamentals over feature bloat helps. The consistent praise for ease of use, voice quality, and sleep effectiveness across thousands of reviews isn't marketing—it's genuine experience.

We recommend Serenity for beginners building their first meditation practice, anyone struggling with sleep who wants guided sessions, and users who appreciate simplicity. The free content lets you test it without commitment. If it clicks, flexible purchasing provides fair value. Reliable performance won't get in the way of developing consistent practice.

Our Recommendation