Thin4Fun vs Cadence Sync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Thin4Fun
This app helps you achieve your weight loss goals and live a healthier life. It provides access to medical professionals, educational resources, and a supportive community to make your journey enjoyable.
- Weight loss guidance
- Access to medical professionals
- Educational resources
- Community support
- Healthier lifestyle promotion
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WEIGHT LOSS MADE SIMPLE | Our mission is to empower YOU to lead a longer, healthier life, achieve your desired weight, and have fun along the way. Join today to have access to a medical professional, education, community support, and much more!
Cadence Sync
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Cadence Sync is a precision interval metronome designed to guide your training sessions, track your BPM, and maintain an exact cadence through crystal-clear audio and visual cues, synchronized in real time with your Apple Watch. Whether you need to structure high-intensity interval blocks or hold a steady rhythm, Cadence Sync projects clean audio tones and dynamic visual indicators without interrupting your background music or podcasts. Key features: • Precision interval metronome: Custom interval blocks with target cadence (SPM/BPM) and duration, featuring smooth 10-second transition ramps. • Real-time heart rate tracking: Stream sub-second heart rate (BPM) measurements directly from Apple Watch sensors via HealthKit. • Dynamic visual flasher: Electric cyan and emerald green glowing ring guiding your movement timing and recovery phases at a glance. • Pure synthetic audio engine: High-definition dual-frequency tones (440Hz, 880Hz, 800Hz, and 350Hz) engineered to cut through background music without spoken voice overlays. • Seamless background audio mixing: Play your favorite playlists on Spotify, Apple Music, or Podcasts in the background while Cadence Sync overlays metronome tones. • Test mode & HealthKit sync: Easily toggle between saving completed sessions directly to Apple Fitness & Health or discarding them in test mode. • Privacy first: Your health metrics stay 100% on your personal devices. We never store, transmit, or share your data with third parties. Master your rhythm with Cadence Sync.
Screenshots
Verdict
The clearest difference is device support: Cadence Sync at 3 against Thin4Fun's 1. Thin4Fun's advantage is iOS requirement (16.0 vs 26.0). On price, 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.
| Parameter | Thin4Fun | Cadence Sync |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 26 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, Apple Watch — better |
| Requires iOS | 16.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 89 MB | 3 MB |
| Age rating | 12+ | 4+ |
| Developer | Thin4Fun LLC | MESI WEB SERVICES LLC |
In-app purchases
Thin4Fun
No in-app purchases
Cadence Sync
No in-app purchases









