Choosing an intermittent fasting app comes down to three questions: how much do you want to pay, how complex do you need the experience to be, and what happens to your data?
This comparison looks at three popular options: Easy Fast, Zero, and Fastic. All three help you track fasts, but they differ significantly in pricing model, feature depth, and design philosophy.
Quick comparison
| Feature | Easy Fast | Zero | Fastic |
|---|---|---|---|
| Free version | Full tracker free | Limited free tier | Limited free tier |
| Platform | iOS | iOS, Android | iOS, Android |
| Account required | No | Yes | Yes |
| Data storage | Local (on device) | Cloud sync | Cloud sync |
| Protocols | 16:8, 18:6, 20:4, OMAD, 5:2, custom | Multiple, many premium | Multiple, many premium |
| Pricing model | Free + optional Pro | Freemium with paywalls | Freemium with paywalls |
| Best for | Simple daily tracking | Coaching and content | Gamified experience |
Easy Fast: simple and free
Easy Fast is built around one idea: tracking a fast should not require a tutorial. The app opens to a timer, you pick a protocol, you tap start, and you are fasting.
What stands out:
- The full tracker is free. Protocols, history, reminders, and dark mode are all included without a subscription.
- No account required. Your fasting log lives on your device, not on a server.
- Minimal interface. The home screen is a timer and a button.
- iOS only. There is no Android version yet.
Where it falls short:
- No coaching content, articles, or community features.
- No cross-device sync (because there is no account).
- Advanced analytics require Easy Fast Pro.
Easy Fast suits people who already understand intermittent fasting and want a clean tool to track it. If you are looking for guided programs or weight-loss coaching, this is not the app.
Zero: content-heavy and coaching-focused
Zero pioneered the modern fasting app category and has grown into a broader health platform. The app combines fasting tracking with educational content, coaching programs, and integration with metrics like weight and mood.
What stands out:
- Cross-platform with iOS and Android.
- Library of articles and content from health professionals.
- Cloud sync across devices.
- Integration with Apple Health and other trackers.
Where it falls short:
- The free tier has narrowed considerably over time. Many features that were once free are now behind a Zero Plus subscription.
- The interface can feel busy if all you want is a timer.
- Account creation is required.
Zero suits people who want fasting tracking bundled with educational content and are willing to pay for the broader experience.
Fastic: gamified and social
Fastic leans into motivation and engagement. The app uses badges, streaks, challenges, and a community feed to keep users coming back.
What stands out:
- Gamification elements like achievements and streaks.
- Community features and challenges.
- Cross-platform with iOS and Android.
- Recipe suggestions and meal planning.
Where it falls short:
- The free tier is limited, and most engaging features require a subscription.
- Notifications and prompts can feel frequent.
- Data is stored in the cloud and tied to an account.
Fastic suits people who are motivated by gamification, streaks, and community accountability.
Comparing pricing
Pricing varies by region and changes over time, but the structural differences are consistent:
- Easy Fast is free for the full tracker. Pro adds analytics and customization.
- Zero is freemium. Core tracking has free elements, but most depth requires Zero Plus.
- Fastic is freemium. Most engaging features require a subscription after a short trial.
If your priority is to spend nothing, Easy Fast is the only option here that offers a complete tracker for free.
Comparing privacy
This is where the three apps differ most.
- Easy Fast stores fasting data locally on your iPhone. No account, no server, no shared data.
- Zero stores data in the cloud and ties it to your account. The app integrates with health platforms and may share aggregated data per its privacy policy.
- Fastic stores data in the cloud and uses your information for personalization, recommendations, and community features.
For users who treat fasting as private health data, the on-device approach Easy Fast takes is meaningfully different from cloud-first competitors.
Comparing simplicity
Simplicity is subjective, but a useful proxy is how many taps it takes to start a fast on a fresh install.
- Easy Fast: Open app, pick a protocol once, tap start. Done.
- Zero: Onboarding flow, account creation, protocol selection, then start.
- Fastic: Onboarding flow, account creation, optional goal-setting, protocol selection, then start.
If you have ever tried a fasting app and abandoned it because the onboarding felt heavier than the tool itself, Easy Fast addresses that specific complaint.
Which app should you choose?
Pick based on what you actually need:
Choose Easy Fast if: You want a free, fast, on-device fasting tracker without an account or cloud sync. You already understand intermittent fasting and just need a clean timer.
Choose Zero if: You want fasting tracking bundled with educational content, articles, and coaching programs. You are comfortable with cloud accounts and freemium pricing.
Choose Fastic if: You are motivated by gamification, streaks, and community challenges. You want a more engaging social experience.
There is no objectively best fasting app. The right choice depends on whether you want a tool, a coach, or a game.
Frequently asked questions
Which fasting app is the most free?
Easy Fast offers the most complete free tier among the three. The full tracker, all common protocols, history, and reminders are included without a subscription.
Which fasting app has the best privacy?
Easy Fast stores data locally on your device and does not require an account, making it the most privacy-preserving of the three. Zero and Fastic both use cloud accounts.
Is Zero better than Easy Fast?
Zero offers more content and cross-platform sync. Easy Fast offers a simpler experience and a more generous free tier. The right answer depends on whether you value content or simplicity more.
Does Fastic work without paying?
Fastic has a free tier, but most engagement features and content require a paid subscription.
Is Easy Fast available on Android?
Not yet. Easy Fast is iOS only at the moment. Zero and Fastic are both available on Android.
Easy Fast is a free intermittent fasting tracker for iPhone with over 1 million users. Download Easy Fast on the App Store.
Ready to start tracking your fasts?
Easy Fast is free to download. Track 16:8, 18:6, 20:4, OMAD, and 5:2 with one tap.