Rhythm vs 16
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.
16
This app guides users through intermittent fasting with personalized plans and convenient tracking tools. It helps manage weight, boost energy, and improve overall health with customizable reminders.
- Personalized intermittent fasting plans
- Fasting and eating window tracking
- Customizable start/end reminders
- AI Calorie Tracker
- Weight loss support
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16:8 - Intermittent Fasting App is your reliable partner in achieving a healthy lifestyle through intermittent fasting. Our application is designed for those who aim to improve their health, manage weight, and boost energy. Features: - Personalized Plan: We offer individual intermittent fasting plans tailored to your lifestyle, goals, and physiological characteristics. - Convenient Tracking: Easily monitor your daily fasting periods and eating windows with an intuitive interface. - Notification Customization: Receive personalized reminders for the start and end of fasting periods to help you stick to your schedule. 16:8 - Intermittent Fasting App now and start your journey towards a healthy lifestyle today! Privacy Policy: https://168app.tilda.ws/privacy_policy Terms of use: https://168app.tilda.ws/terms_of_use
Screenshots
Verdict
Rhythm and 16 both sit at 4.7 stars, but that hides the real split: 89% of Rhythm's written reviews are positive against 50% of 16's. Rhythm also leads on in-app purchases (none vs 3) and ratings volume (458 vs 64). 16's advantage is update cadence (every 5 days vs every 13 months). On price, rating, 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
Both are free to download. 16 sells 3 in-app purchases, starting at $6.99 per 7 days. Rhythm asks for nothing beyond the download.
16 holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Rhythm has 458 ratings behind it against 64, so its average is the more settled of the two. Written reviews complicate that: 89% of Rhythm's written reviews are positive against 50% of 16's, so the app with the better star average is not the one people write more warmly about.
Rhythm ships an update every 13 months, 16 every 5 days. Both last shipped on October 23, 2026.
| Parameter | Rhythm | 16 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (458 ratings) | 4.9 (64 ratings) — better |
| Positive reviews | 88.6% of reviews — better | 50.0% of reviews |
| Number of ratings | 458 — better | 64 |
| Update frequency | Every 13 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 17.6 | 16.2 — better |
| Further details — not scored | ||
| Size | 3 MB | 71 MB |
| Age rating | 12+ | 4+ |
| Developer | Bijan Cronin | AV PRO GROUP LTD |
Customer experience
Rhythm
16
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
16
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Rhythm
No in-app purchases
16
- Weekly Plan$6.997 Days
- Premium Yearly Plan3 Days trial$39.991 Year
- Premium Yearly Plan$49.991 Year
