Body Rhythm vs CaffeineX
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Body Rhythm
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Your workout, your rhythm. Rhythm is the ultimate interval timer designed for your Apple Watch and iPhone. Whether you're pushing through a grueling HIIT session, practicing mindfulness, or staying on top of your daily pelvic floor exercises, Rhythm adapts to your lifestyle. Key Features: Fully Customizable Intervals: Set active and rest times that match your goals. Versatile Activity Support: Perfect for HIIT, Tabata, Boxing, Yoga, and specialized routines like Kegel exercises and Meditation. Smart Scheduling: Organize your day with recurring routines and activities. Seamless Apple Watch Integration: Start and control your sessions right from your wrist. Elegant & Focused UI: A premium, distraction-free design with Light and Dark mode support. Progress Tracking: Stay motivated by viewing your activity history at a glance. Take control of your routines and find your rhythm today. Rhythm Pro: A one-time in-app purchase unlocks the creation of new schedules and removes ads. Activities, timers, history, widgets, Apple Watch, and existing schedules remain available without Pro.
CaffeineX
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CaffeineX helps you understand how coffee, tea, energy drinks, and espresso may affect the rest of your day. Instead of only counting cups, CaffeineX estimates your current caffeine level, shows a clear 24-hour curve, and gives a simple sleep reference so you can decide whether another drink still makes sense. What you can do with CaffeineX: - Log common caffeinated drinks quickly - Estimate remaining caffeine based on your entries - See when your level may move closer to your sleep reference - Check today's total intake and personal limit - Review recent caffeine patterns over time - Add custom drinks when presets are not enough - Sync caffeine intake with Apple Health if you choose - Use widgets for a quick glance at your status CaffeineX is built for people who like coffee but do not want caffeine to quietly take over their evening. It keeps the interface calm, focused, and easy to read, so the answer is visible fast: how much caffeine is likely still active, whether it may affect sleep, and when it may be better to pause. Caffeine estimates are for everyday wellness reference only and are not medical advice.
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Verdict
The clearest difference is in-app purchases: CaffeineX at none against Body Rhythm's 1. CaffeineX also leads on update cadence (every 3 days vs every 2 weeks) and iOS requirement (17.0 vs 26.2). On price, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Body Rhythm sells 1 one-off in-app purchase. CaffeineX asks for nothing beyond the download.
Body Rhythm ships an update every 2 weeks, CaffeineX every 3 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | Body Rhythm | CaffeineX |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 3 days β better |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Devices | iPhone, iPad, Apple Watch β better | iPhone, iPad |
| Requires iOS | 26.2 | 17.0 β better |
| Further details β not scored | ||
| Size | 11 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | ι³ εΌ | ζ₯ εΎ |
In-app purchases
Body Rhythm
- Rhythm Pro$2.99
CaffeineX
No in-app purchases







