Comparison

Eterna vs Chain

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Eterna

Features
Read full description

Eterna Kurumsal Yönetim Programı, Eterna INC. özelinde kurum içi yönetim süreçlerinin takibi için kullanılmaktadır.

About

Chain

This app helps you build positive habits and break negative ones through a visual tracking system. Set goals, monitor daily progress, and receive reminders to stay on track. Customize your experience with themes and gain insights into your long-term progress.

Highlights
  • Build unbreakable habit chains
  • Daily progress tracking with calendar view
  • Set and achieve personal goals
  • Routine loop for habit acquisition
  • Customizable reminders
  • Motivational quotes and insights
  • User-friendly interface with themes
Features
Read full description

Take control of your habits and on a transformative journey with Chain, the ultimate daily habit tracker! In the hustle and bustle of modern life, cultivating positive habits can be the key to unlocking your full potential. Whether you're determined to break free from unhealthy addictions, establish positive routines, or simply keep a vigilant eye on your progress. Chain is your unwavering companion on the path to self-improvement. Key Features: Build Unbreakable Chains Create daily habits and watch your success unfold. The chain is your visual representation of commitment. Don't break it, and witness the power of consistency. Daily Progress Tracking Effortlessly monitor your daily achievements. The sleek calendar allows you to mark each successful day, providing a clear overview of your commitment and dedication. Set Personal Goals Define your goals, big or small, and let the chain guide you toward achieving them. Break down larger objectives into manageable daily tasks, making success more achievable. Routine Loop Create a routine cycle without breaking your chains using the Don't Break the Chain method. Stick to this cycle and get rid of your addictions as well as easily acquire new habits! Custom Reminders Set personalized reminders to stay on track. Our app will gently prompt you at the perfect times, ensuring you never miss a chance to build your habit. Stay Motivated Receive motivational reminders and quotes to keep you inspired on your journey. Overcome challenges, build resilience, and celebrate your victories with the chain's positive reinforcement. Insights and Analytics Track your long-term progress with detailed insights and analytics. Understand your habits, identify patterns, and optimize your routine for even greater success. User-Friendly Interface Navigate effortlessly through a user-friendly interface designed for simplicity and efficiency. Track your journey, celebrate milestones, and make habit-building an enjoyable experience. Customization with Different Themes You can customize the chain you create with different themes and color options. By choosing a theme according to your taste, you will beautify your chain and continue to gain habits without breaking it. Subscription Knowladge "Chain" subscription Pro Access . "Chain" subscription plans: Monthly: $1.99 Annual: $12.99 Payments and Renewal: Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period. You can manage or turn off auto-renew in your Account settings at any time after purchase No cancellation of the current subscription is allowed during the active period. Terms of Use(EULA): https://chain-terms-of-use.blogspot.com/2024/07/chain-terms-of-use.html Privacy policy: https://sites.google.com/view/chain-privacy-policy/ana-sayfa?pli=1

Screenshots

Eterna4 screens
Chain4 screens

Verdict

The call

The clearest difference is in-app purchases: Eterna at none against Chain's 3. Eterna also leads on iOS requirement (12.0 vs 15.0). Chain's advantage is update cadence (weekly vs every 3 months). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Chain sells 3 in-app purchases, starting at $2.99 per month. Eterna asks for nothing beyond the download.

UpkeepUpdate frequency

Eterna ships an update every 3 months, Chain weekly. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 5 level
Eterna versus Chain: the parameters behind the verdict, then further details
ParameterEternaChain
PriceFreeFree
Positive reviews—90.0% of reviews
Update frequencyEvery 3 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size42 MB21 MB
Age rating4+4+
DeveloperEterna Inc.Muhammed Talha POLAT

In-app purchases

None

Eterna

No in-app purchases

3 purchases

Chain

Subscriptions2
  • Chain Pro Access - Monthly$2.991 Month
  • Chain Pro Access - Annual$12.991 Year
One-time1
  • Chain Pro Access Lifetime$24.99

Questions

Is Eterna free?
Eterna is free to download, with no in-app purchases.
Is Chain free?
Chain is free to download, with in-app purchases available.
Do Eterna or Chain have ads?
Neither Eterna nor Chain shows ads.
Which is updated more often, Eterna or Chain?
Eterna ships an update every 3 months, and Chain weekly. Most recently, Eterna was updated on November 4, 2026 and Chain on October 30, 2026.

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