Fasting Center vs Ritmo Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fasting Center
Plan extended fasts with personalized projections. Input your body stats and desired duration to estimate weight change, fat loss, and energy use. This data-driven tool provides a clear starting point for your fasting journey.
- Personalized fast planning
- Extended fast duration options
- Projected weight change
- Estimated fat loss
- Energy use projection
- Data-driven starting point
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Free fasting tracker and timer for intermittent fasting, OMAD, and extended water fasts. No ads, no account needed. Fasting Center is built around your numbers, not generic guesses. Start a fast, follow 17 fasting stages on a live ring, and see weight, fat loss, and energy use projected from your own body stats, then measured against what actually happened. TRACK YOUR FAST - Timer with stage markers: fat burning, ketosis, autophagy, and more - Any schedule: 16:8, 18:6, 20:4, OMAD, multi-day extended, or open-ended - Live Activity and Dynamic Island on iPhone, home screen widgets - Edit start and end times when life happens - Projected vs measured weight loss, side by side ASK YOUR FASTING ASSISTANT - Ask about your fasts, your weight, or how you feel during a fast - Answers based on your own log and the fasting.center knowledge base - Runs the calculators for you - how long to a goal weight or a body fat target - Free, with a daily limit of questions TWO CALCULATORS - Extended fast: total weight change, fat, water, glycogen, and protein loss day by day - Intermittent fasting: daily calorie deficit and expected weight change for your window - Personalized from your sex, age, height, weight, body fat, and activity MEASURE YOUR PROGRESS - Log weight, body fat, waist, ketones, glucose, and blood pressure - Rate energy, hunger, motivation, and stress during a fast - Apple Health sync: weight and body fat flow in automatically - Charts over 24h, 7 days, 30 days, 90 days, and a year - Import your history from Zero and Easy Fast YOUR DATA, YOURS - Free, no ads, no subscription - Works fully as a guest; optional sign-in with Apple or Google for cloud backup and sync - Delete your data and account anytime, completely Whether you are planning your first extended fast or fine-tuning a routine you have run for years, Fasting Center shows you what to expect and what actually happened. Fasting Center is a planning and estimation tool and does not provide medical advice. Consult a healthcare provider before starting an extended fast, especially if you have any underlying health conditions.
Ritmo Timer
This interval timer is designed for focused workouts, particularly for Air Bike conditioning. It offers a distraction-free experience with a clean interface, built-in and customizable workout routines, and offline functionality.
- Built-in interval workouts
- Workout library (Sprint, Power, Endurance, BJJ)
- Unlimited custom workout creation
- Large, easy-to-read timer
- Clean, minimalist interface
- Works completely offline
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Train harder. Recover smarter. Ritmo Timer is a clean, distraction-free interval timer built specifically for Air Bike conditioning. Whether you're training for Brazilian Jiu-Jitsu, HIIT, or improving your conditioning, Ritmo keeps you focused on the workout—not the timer. Features • Built-in interval workouts • Sprint, Power, Endurance & BJJ Conditioning workout library • Create unlimited custom workouts • Large, easy-to-read timer • Clean, minimalist interface • Works completely offline No accounts. No ads. Just train.
Screenshots
Verdict
The clearest difference is rating: Ritmo Timer at 5.0 against Fasting Center's 4.7. Fasting Center's advantage is ratings volume (18 vs 1) and update cadence (every 3 days vs weekly). On price, ads, in-app purchases and monetization model 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.
Ritmo Timer holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Fasting Center has 18 ratings behind it against 1, so its average is the more settled of the two.
Fasting Center ships an update every 3 days, Ritmo Timer weekly. The most recent releases landed on October 5, 2026 and October 8, 2026 respectively.
| Parameter | Fasting Center | Ritmo Timer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (18 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 18 — better | 1 |
| Update frequency | Every 3 days — better | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.5 |
| Further details — not scored | ||
| Size | 46 MB | 7 MB |
| Age rating | 12+ | 4+ |
| Developer | Andrey Titov | AUSTIN GORDON WOODS |
Customer experience
Fasting Center
Ritmo Timer
In-app purchases
Fasting Center
No in-app purchases
Ritmo Timer
No in-app purchases
Questions
Is Fasting Center free?
Is Ritmo Timer free?
Which has better reviews, Fasting Center or Ritmo Timer?
Do Fasting Center or Ritmo Timer have ads?
Which is updated more often, Fasting Center or Ritmo Timer?
Other comparisons
