Caffeine Tracker vs Onset
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Caffeine Tracker
Precisely track your caffeine intake from various sources to manage alertness and sleep. Visualize your body's caffeine load with a real-time metabolism chart and receive smart notifications for optimal consumption and cutoff times.
- Rapid caffeine logging
- Real-time metabolism chart
- Smart notifications
- Daily summary and analytics
- Customizable settings
- Data export to CSV
- Health app integration
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Fuel your day with precision—track every sip, shot, and energy boost with Caffeine Tracker! Whether you’re a coffee connoisseur, tea fanatic, or energy-drink devotee, Caffeine Tracker helps you log intake in seconds, visualize your body’s caffeine load, and stay in control of your alertness and sleep. • Rapid logging: Search or manually enter caffeine from your favorite beverages or supplements • Real-time metabolism chart: watch a dynamic, scientific Bateman-model graph chart your caffeine load over time • Smart notifications: get an alert before your caffeine wears off so you can plan your next pick-me-up, and an alert at your cutoff time to make sure you don’t over do it. • Daily summary & analytics: view intake history, trends, and statistics to optimize your consumption habits • Customizable settings: choose your daily limit, bedtime, alerts. • Export your data to a csv file. Whether you want to boost productivity, reduce caffeine consumption, sleep better, conquer afternoon slumps, or simply understand how caffeine affects you, Caffeine Tracker is your ultimate companion. Download now and take control of your energy—sip smarter today! ABOUT HEALTH DATA: On supported devices, Caffeine Tracker App can access the Health app to write caffeine data with your permission. All caffeine data is written in full accordance with the iOS app review rules set by Apple. Health data is solely used to keep the Caffeine Tracker app in sync with the Health app, and does not leave the device via the Caffeine Tracker app. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://anthonyharveyapps.com/privacy-policy-caffeine-tracker
Onset
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What might your next coffee add at bedtime? Onset estimates caffeine remaining at your chosen bedtime from the drinks you log. Check a possible drink first, adjust its amount and time, then log it only if you've had it. CHECK BEFORE YOU LOG Compare your logged drinks with a temporary What if forecast. Adjust caffeine amounts with the dial, choose a serving and set the drink's time. KEEP YOUR DAY TOGETHER See today's drinks beneath your forecast. Save your usual drinks, review earlier entries, and edit or remove a log. EXPLORE YOUR OWN PATTERNS Review caffeine timing alongside optional Apple Health sleep records and morning ratings. Personal comparisons need enough recorded nights; a clear pattern may never appear. MAKE IT YOURS Choose Ember, Matcha, Midnight or Obsidian, with light and dark appearances. PRIVATE BY DEFAULT Your history stays on your iPhone. No account, cloud sync or tracking. Drink search works offline. Apple Health sleep access is optional and read-only. Forecasts are estimates based on recorded drinks and model assumptions, not measurements or predictions of how you will sleep. Feedback and support: inder@doodlestudio.io
Screenshots
Verdict
The clearest difference is in-app purchases: Onset at none against Caffeine Tracker's 2. Caffeine Tracker's advantage is update cadence (every 3 weeks vs every 2 months) and ratings volume (7 vs 1). 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. Caffeine Tracker sells 2 in-app purchases, starting at $0.99 per month. Onset asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Caffeine Tracker against 5.0 for Onset. That said, the two scores are not equally well evidenced: Caffeine Tracker has 7 ratings behind it against 1, so its average is the more settled of the two.
Caffeine Tracker ships an update every 3 weeks, Onset every 2 months. Both last shipped on October 24, 2026.
| Parameter | Caffeine Tracker | Onset |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (7 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 7 — better | 1 |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 8 MB |
| Age rating | 17+ | 4+ |
| Developer | Anthony Harvey | Doodle Studio LLC |
Customer experience
Caffeine Tracker
Onset
In-app purchases
Caffeine Tracker
- Caffeine Pro Monthly$0.991 Month
- Caffeine Pro Yearly7 Days trial$5.991 Year
Onset
No in-app purchases









