Caffeine App vs Frank's Caffeine Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Caffeine App
Track your caffeine intake from various beverages and monitor your hydration levels. Visualize your caffeine curve over 24 hours and receive notifications for your optimal sleep time. Integrates with Apple Health and Apple Watch for seamless logging and data syncing.
- Log caffeine from coffee, tea, and energy drinks
- Visualize 24-hour caffeine curve
- Calculate optimal sleep time
- Track daily water intake
- Apple Watch logging and complications
- Apple Health integration
- iCloud sync
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How much caffeine is still in your body? When can you fall asleep? Are you drinking enough water? Caffeine App gives you the answers — at a glance. Caffeine Tracking • Log every coffee, tea, espresso, energy drink, or mate • Scrollable 24-hour timeline shows your caffeine curve • See how much caffeine is currently in your system • Create custom drinks with individual caffeine amounts Optimal Sleep Time • Caffeine App calculates when you're ready to sleep • Get notified when your sleep time is reached • Set your personal caffeine limit and desired sleep time Water Tracking • Track your daily water intake with personalized goals • Customizable reminders to stay hydrated • Beautiful charts for caffeine and water consumption Apple Watch • Log caffeine and water right from your wrist • Daily charts for caffeine and water • Complication shows your optimal sleep time More Features • Apple Health integration — caffeine and water entries stay in sync • iCloud sync across all your devices • Dynamic Type for optimal readability • URL scheme support
Frank's Caffeine Tracker
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Coffee is great, but are you drinking too much of it? Is caffeine ruining your sleep? This intelligent caffeine tracker answers these questions with the help of science, helping you find the perfect balance between energy and rest. What makes this special: Unlike simple caffeine trackers, this app uses advanced pharmacokinetic models that consider your unique biology - age, weight, genetics, pregnancy status, and more - to predict exactly how caffeine affects YOU. Key Benefits: • Personalized predictions - See when caffeine will peak and when it'll clear your system • Sleep protection - Automatic warnings before caffeine disrupts your rest • Health insights - Track patterns, detect withdrawal, prevent overconsumption • Zero privacy invasion - All calculations happen on your device, no data is shared • Optional Apple Health integration • Scientifically accurate - Based on peer-reviewed research on caffeine metabolism Features that matter: - Instant caffeine level calculations - Real-time (estimated) blood concentration graphs and predictions - Smart notifications for optimal timing and sleep protection - Track your sleep quality: Log how you slept each morning and discover how caffeine affects your sleep - Weekly analytics showing consumption patterns and trends - Support for special conditions (pregnancy, genetics, liver function) - Custom drink library for your favorite beverages - Beautiful, accessible interface with dark mode - Complete data export for personal records. Your data is yours. Perfect for anyone who wants: - Better sleep quality, optimized energy levels, reduced caffeine anxiety, pregnancy-safe monitoring, shift work support, or simply conscious consumption. - Transform your relationship with caffeine. Start your journey to better energy and sleep today. This app provides educational information and estimates. Always consult healthcare professionals for medical decisions.
Screenshots
Verdict
The clearest difference is in-app purchases: Frank's Caffeine Tracker at none against Caffeine App's 1. Frank's Caffeine Tracker also leads on iOS requirement (15.1 vs 18.0). On price, update cadence, 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. Caffeine App sells 1 one-off in-app purchase. Frank's Caffeine Tracker asks for nothing beyond the download.
Caffeine App ships an update monthly, Frank's Caffeine Tracker fortnightly. The most recent releases landed on October 15, 2026 and October 4, 2026 respectively.
| Parameter | Caffeine App | Frank's Caffeine Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (340 ratings) — better | — |
| Positive reviews | 73.7% of reviews | — |
| Number of ratings | 340 — better | — |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, Apple Watch, Vision Pro — better | iPhone, iPod |
| Requires iOS | 18.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 17 MB | 37 MB |
| Age rating | 4+ | 17+ |
| Developer | Oleg Mueller | Frank Gerritse |
Bugs and requests
Caffeine App
Reported bugs
10 issues- Sleep ready time displays current time instead of predicted sleep time
- Cannot rename custom amounts until after adding them
- Newly added custom amounts appear at bottom of list
- Health app data from third-party apps not syncing
- All presets missing in some versions
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- HealthKit integration broken in certain versions
- Shift work time differential not processed correctly
- Outdated caffeine data for Dunkin Donuts beverages
- Graphics update delays causing app unresponsiveness
- Watch app loading issues on initial launch
Requested features
20 requests- Toggle option to disable bar chart visualization
- Taller graph display area with scrolling capability
- Personalization based on body weight and metabolism
- Ounce-based measurement options for drinks
- Multi-day and historical trend analysis
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- Siri Shortcuts integration for automated logging
- Today widget for quick access
- Mood and energy level tracking
- More granular unit adjustments (fractions of shots)
- Expanded beverage library (Monster Java, Sheetz coffee, K-cups, etc.)
- Custom coffee group creation without preset requirements
- Apple Watch complications showing current caffeine levels
- Watch app graph visualization
- Headache threshold level tracking
- Future-looking graph projections
- Water consumption tracking integration
- Ability to rename custom amounts before adding
- Custom amounts appearing at top of list instead of bottom
- Shift work schedule support
- Average daily caffeine statistics
Frank's Caffeine Tracker
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Caffeine App
- Unlock Pro$4.99
Frank's Caffeine Tracker
No in-app purchases
Questions
Is Caffeine App free?
Is Frank's Caffeine Tracker free?
Do Caffeine App or Frank's Caffeine Tracker have ads?
Which is updated more often, Caffeine App or Frank's Caffeine Tracker?
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