Fast Rhythm vs Fasting Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fast Rhythm
This app helps you build consistent daily routines by tracking fasting and sleep patterns. It provides a unified score to monitor your metabolic rhythm and offers insights for sustainable habit building. Focuses on privacy with offline, on-device data storage.
- Fasting timer with customizable plans
- Sleep rhythm logging and quality rating
- Metabolic Rhythm Score for habit feedback
- Weekly rhythm reports
- Personalized insights and recommendations
- Streaks, achievements, and progress tracking
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Fast Rhythm: Fasting & Sleep is a calm fasting timer and sleep rhythm tracker for people who want consistency without accounts, noise, or complicated health dashboards. The idea is simple: fasting is easier to understand when you also pay attention to sleep. Fast Rhythm brings Fasting + Sleep + Regularity into one Metabolic Rhythm Score, so you can see whether your daily routine is moving in a steadier direction. It is built for ordinary routines: a 16:8 fast after dinner, a 14:10 plan during busy weeks, a longer fast when you feel ready, and a sleep log that helps you notice when rest is supporting or hurting your rhythm. Core privacy promises are built into the product story: Offline, No Login, Privacy First, On Device, No Cloud Upload. You can open the app and start tracking without creating an account. Your fasting sessions, sleep records, hunger notes, quality ratings, streaks, achievements and settings are designed to stay on your iPhone. What you can track: * Fasting timer Start a fast, follow elapsed time, see how much time remains, and stop when you are ready. Use common plans such as 12:12, 14:10, 16:8, 18:6 and 20:4, or choose a custom rhythm that fits your week. The timer helps you separate the fasting window from the eating window without turning every meal into a spreadsheet. * Sleep rhythm Log bedtime and wake time, rate sleep quality, and review sleep duration. Fast Rhythm also helps you notice sleep debt and irregular nights, because a late night often changes how a fast feels the next day. The sleep view is practical: record, wake up, rate, and move on. * Metabolic Rhythm Score The dashboard combines sleep quality, sleep regularity, fasting compliance and behavior synergy into one score. It is not a diagnosis and it is not medical advice. It is a simple feedback loop for habits: did you sleep enough, did you keep a reasonable rhythm, did you complete your fast, and did fasting and sleep support each other? * Weekly rhythm report Review a 7-day report with average sleep, average fasting time, completed fasts, daily scores, best day, areas that need attention and key factors for the week. The report is useful when you do not want to judge a routine from one good or bad day. * Insights and recommendations See the score breakdown and practical suggestions, such as improving sleep duration, reducing sleep debt, keeping a steady bedtime, choosing a fasting plan that matches your energy, or protecting recovery after a poor night. The goal is sustainable rhythm, not intensity for its own sake. * Streaks, profile and achievements Track total fasts, fasting streak, average fast duration, sleep streak, average sleep, sleep quality score, and achievements such as First Fast, 7-Day Streak, 16-Hour Club, Sleep Week and Rhythm Master. These milestones are small signals that your routine is becoming more consistent. Privacy matters because fasting and sleep can reveal personal routines, health goals, meal timing, rest habits and lifestyle patterns. Fast Rhythm is designed to keep that information local. Offline: core tracking, history, dashboard, reports, insights and settings are designed for use without a required online account. No Login: no registration, username, password or social sign-in is required to start. Privacy First: the app focuses on your daily routine, not building a cloud profile around your body clock. On Device: fasting data, sleep data, scores, streaks, achievements and preferences are stored locally on your iPhone. No Cloud Upload: Fast Rhythm does not upload your fasting and sleep history to its own cloud. Use Fast Rhythm for lightweight fasting, sleep logs, weekly rhythm awareness and private on-device tracking. It supports habits, not medical treatment; ask a qualified health professional if fasting may be unsafe for you. Privacy Policy https://5gotogo.github.io/Fasting-privacy/privacy-policy.html Terms of Use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Fasting Timer
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The private fasting timer that respects your data. FastClear is the intermittent fasting timer for people who value their privacy. No account required, no cloud, no tracking — your fasting data stays on your device, always. WHAT YOU GET - Track every fast with precision: 16:8, 18:6, 20:4, OMAD, 5:2, or your own custom schedule. - See exactly what's happening in your body: progress through fed, fat burning, ketosis, and autophagy phases. - Stay motivated with streaks, milestones, and home screen widgets that keep your current fast one glance away. - Syncs with Apple Health (optional) — your fasting sessions are saved locally and can be written to Apple Health if you enable it. WHY FASTCLEAR IS DIFFERENT Unlike other fasting apps, FastClear doesn't ask for your email, your weight, or your eating habits. You don't even need to create an account. The app works 100% offline. The only data we ever see is none — because nothing leaves your iPhone. 100% PRIVATE BY DESIGN Your data is yours alone. FastClear is designed to be the most private fasting tracker on the App Store. Privacy label: Data Not Linked to You. You can verify it on the FastClear App Store page before downloading. PRICING FastClear is free to download with all essential features included. Unlock advanced protocols, full fasting history, detailed stats, and home screen widgets with FastClear Pro: $2.08/month (billed annually at $24.99) or $3.99/month. Includes a 7-day free trial. LEGAL Terms of Use (EULA): https://zealous-chokeberry-859.notion.site/FastClear-Terms-of-Use-34565a7a621c8008bfe3f9a45390ba03 Privacy Policy: https://zealous-chokeberry-859.notion.site/FastClear-Privacy-Policy-34565a7a621c8041892cda69b42eb329 Download FastClear today and start your fasting journey — privately.
Screenshots
Verdict
The clearest difference is update cadence: Fasting Timer at every 11 days against Fast Rhythm's every 6 weeks. On price, ads, in-app purchases 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
Both are free to download. Fast Rhythm sells 2 in-app purchases, starting at $4.99 per month and Fasting Timer sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
Fast Rhythm ships an update every 6 weeks, Fasting Timer every 11 days. The most recent releases landed on July 9, 2026 and September 10, 2026 respectively.
| Parameter | Fast Rhythm | Fasting Timer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 6 weeks | Every 11 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone | iPhone |
| Requires iOS | 18.6 | 17.6 — better |
| Further details — not scored | ||
| Size | 1 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | 家宝 戴 | Nicolas Dojcilovic |
In-app purchases
Fast Rhythm
- Fasting Pro Monthly3 Days trial$4.991 Month
- Fasting Pro Yearly3 Days trial$19.991 Year
Fasting Timer
- FastClear Pro Monthly7 Days trial$3.991 Month
- FastClear Pro Yearly7 Days trial$24.991 Year





