Rhythm vs Fasty
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rhythm
This app simplifies intermittent fasting with a daily tracker. It supports various fasting schedules, from beginner-friendly to advanced, and helps users monitor their progress over time. Get notifications when your fast is complete.
- Daily fasting tracker
- Flexible schedule support
- Weekly progress tracking
- Customizable fasting goals
- One-click start
- Progress monitoring
- Completion notifications
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Rhythm is a simple intermittent fasting tracker for people who want a clean fast timer without the bloat. No account. No ads. Just a focused way to start a fast, stay on track, and review your history when you're done. Choose any fasting goal from 7 to 24 hours, including popular rhythms like 16:8 and 18:6. Start a fast in seconds, follow your progress live, and switch between countdown and elapsed timer views. Rhythm helps you stay consistent with: - flexible fasting goals - multiple fasts in the same day - reminder and completion notifications - editable fasting history - weekly progress insights If you want a fasting app that feels simple, respectful, and easy to trust, Rhythm gives you the essentials and gets out of your way.
Fasty
This app helps users track intermittent fasting by monitoring fasting days and eating periods. It supports weight tracking in both pounds and kilograms and does not collect user data.
- Intermittent fasting tracking
- Weight tracking
- Fasting day monitoring
- Eating period logging
- Pound and kilogram support
- No data collection
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Fasty: the Fasting Tracker helps you track your weight, the days you fast, and when you eat on non-fasting days (intermittent fasting). Fasty doesn't track any of your data, is free, and supports pounds and kilograms.
Screenshots
Verdict
The clearest difference is ratings volume: Rhythm at 454 against Fasty's 7. Fasty's advantage is rating (4.9 vs 4.7) and review sentiment (100% vs 89%). On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Fasty holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Rhythm has 454 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 89% of Rhythm's written reviews are positive against 100% of Fasty's.
Rhythm ships an update every 13 months, Fasty every 16 months. The most recent releases landed on October 18, 2026 and October 1, 2026 respectively.
| Parameter | Rhythm | Fasty |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (454 ratings) | 4.9 (7 ratings) — better |
| Positive reviews | 88.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 454 — better | 7 |
| Update frequency | Every 13 months — better | Every 16 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 2 MB |
| Age rating | 12+ | 4+ |
| Developer | Bijan Cronin | Forest and the Trees, LLC |
Customer experience
Rhythm
Fasty
Bugs and requests
Rhythm
Reported bugs
2 issues- Can't add past fasts
- Inconsistent weekly progress tracking
Requested features
5 requests- Ability to track longer fasts (e.g., 48-72 hours)
- Option to view fasting history beyond the past week
- Customizable notifications and reminders
- Integration with health/fitness tracking apps
- Weight tracking and progress visualization
Fasty
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Rhythm
No in-app purchases
Fasty
No in-app purchases
