# Caffeine Clock: Track Caffeine — The Best Caffeine Tracker. > Caffeine tracker modeling absorption and half-life for sleep optimization. (iPhone/iPad app by ANTONIN WINGENDER.) - Source: https://appshunter.io/ios/app/caffeine-clock-track-caffeine/id6504160396 (this page in markdown: same URL + `.md`) - Developer: [ANTONIN WINGENDER](https://appshunter.io/developer/1751178342) - Category: Health & Fitness, Productivity - Price: Free with in-app purchases - Rating: 4.70/5 from 24 App Store ratings · 5 written reviews indexed - Age rating: 4+ - Requires: iOS 16.4 · 122 MB - Languages: American English - Released: 2024-06-12 - Data updated: 2026-08-05 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/caffeine-clock-track-caffeine/id6504160396/reviews.md ## What is Caffeine Clock? Track your caffeine and improve your sleep. Caffeine Clock is a caffeine tracker that models absorption and half-life to estimate how much caffeine is in your system throughout the day. Log what you drink or eat, see how levels rise and fall, and plan your last cup so you can sleep with confidence. Accurate tracking with absorption rate Not just totals. Caffeine Clock models how quickly you absorb caffeine and how it declines (half-life), then estimates your level now and later. If you note how long you sipped that cappuccino, the curve updates accordingly. A clear, actionable dashboard An attractive graph shows your current level, projected decline, and how much caffeine you’ll have at any time. Long-press to scrub the timeline and reveal exact values. At a glance, know whether you’re in the clear - or whether another cup will push you past your comfort zone. Interactive Home Screen Widgets Monitor your stats without even opening the app. View your live caffeine curve and current mg count directly on your Home Screen. Need to log a refill? Use the quick-add widget to track your favorites with a single tap - keeping your data accurate with zero friction. Sleep-aware insights Set a target bedtime. If your projected level looks high by then, Caffeine Clock lets you know early—often before you even add a drink—so you can adjust your cut-off and protect tonight’s sleep. Thoughtful onboarding Start strong with a quick setup that captures your preferences and sensitivity. You can fine-tune everything at any time. 200+ drinks, plus your own Choose from a built-in database of coffees, teas, and energy drinks, or create custom drinks with your own sizes and mg. Fast logging means better tracking. Thresholds and gentle alerts Pick a daily caffeine threshold that fits your routine. Get timely reminders before you overdo it and suggestions that keep you on track. Private and fully offline No account, no signup. Your data stays on your device, with an option to transfer locally. Caffeine Clock works fully offline. Anytime, anywhere. Made for everyday routines Whether it’s espresso at 8, tea at 2, or an energy drink before a workout, Caffeine Clock shows how today’s choices affect tonight’s sleep—so you can enjoy what you love without second-guessing it. How it works - Log a drink from the 200+ library or use the quick-add widget. - The app models absorption and half-life to estimate your level over time. - Watch the live caffeine curve and countdown on the dashboard or Home Screen. - Set a bedtime and get informed if you may still be “too caffeinated” by then. Why a dedicated caffeine tracker? Caffeine affects everyone differently. A general health app won’t tell you when a 3 PM latte will still be in your system at 10 PM. Caffeine Clock focuses on one job: timing your intake for better days and better nights. Get started in minutes Install, finish the onboarding, log your first drink, and watch your caffeine curve come to life. Disclaimer Caffeine Clock provides estimates based on published half-life ranges and your inputs. It’s for informational purposes only and is not a medical device or a substitute for professional advice. ## Key features - Caffeine absorption and half-life modeling - Real-time caffeine level tracking - Interactive home screen widgets - Sleep-aware insights and bedtime planning - Extensive drink database with custom options - Daily caffeine threshold alerts ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Remove Ads | $9.99 | one-time | | Remove ads | $4.99 | one-time | ## Recent user reviews (5 of 5) All indexed reviews: https://appshunter.io/ios/app/caffeine-clock-track-caffeine/id6504160396/reviews.md ### 5/5 — Great app for tracking caffeine *2026-06-29* The app is very minimal and does exactly what it needs to do ### 5/5 — wonderful! *2026-03-24* interface is sublime + genuinely very helpful! ### 3/5 — Good effort, but missing key feature *2026-01-19* The idea and interface are gorgeous… But there’s no way to alter the half-life and indicate with you or a slow metabolizer or a fast metabolizer and that is absolutely critical! ### 5/5 — Love it *2025-10-06* Really well made app, actually useful for tracking my caffeine usage. ### 5/5 — Love it *2025-10-04* The app is perfect for tracking my caffeine intake and seeing how it affects my sleep. I love that it estimates my caffeine level at bedtime, so I know exactly when to have my last cup. ## Frequently asked questions about Caffeine Clock ### How does Caffeine Clock track caffeine? Caffeine Clock models caffeine absorption and half-life to estimate your current and projected caffeine levels. It considers when you consume drinks and how long you sip them to update the caffeine curve. ### Can I use Caffeine Clock offline? Yes, Caffeine Clock works fully offline. Your data is stored locally on your device, and no account or signup is required, ensuring your privacy. ### What kind of drinks can I log in Caffeine Clock? Caffeine Clock includes a database of over 200 drinks like coffees, teas, and energy drinks. You can also create custom drinks with your own sizes and caffeine amounts. ### Does Caffeine Clock have ads? No, Caffeine Clock does not contain advertisements. It is a free application that focuses on providing a clean and uninterrupted user experience. ### How does Caffeine Clock help with sleep? By tracking your caffeine intake and projecting levels, Caffeine Clock helps you set a target bedtime and alerts you if your projected caffeine level might interfere with sleep, suggesting adjustments. ### What devices does Caffeine Clock support? Caffeine Clock is available for iPhone and iPod devices. It is designed to be compatible with these Apple mobile platforms. ### How often is Caffeine Clock updated? The latest version, 2.5.15, was released on 2024-06-12, with the last update on 2026-03-16. This indicates a relatively recent update cycle for the application. ### What is the user rating for Caffeine Clock? Caffeine Clock has a high user rating of 4.6 stars, based on 18 ratings. This suggests a positive reception from its user base. ## Version history (last 5 releases) ### 2.6.8 — 2026-07-15 Export your caffeine history as CSV or JSON, with all-time, 30-day, 90-day, or custom date ranges. New subtle haptic feedback makes logging drinks and adjusting controls feel more responsive. Preview videos no longer interrupt music or podcasts playing in the background. ### 2.6.7 — 2026-07-09 • New: haptic feedback throughout the app for a more tactile feel • Fixed: duplicate entries for custom drinks in the "Caffeine by source" breakdown • Fixed: the app no longer pauses your music or podcasts when opened ### 2.6.6 — 2026-07-02 • Fixed a crash that could occur while searching for drinks on the add drink screen • Stability improvements ### 2.6.5 — 2026-06-15 • New hours + minutes wheel picker for "Time to finish", with quick presets • Drink durations now go up to 24 hours ### 2.6.2 — 2026-06-12 • Fixed a bug where "Time to finish" could not be set • Stability and reliability improvements • Completely redesigned feedback screen: pick a topic, write your message, and leave your email if you'd like a reply ## Apps similar to Caffeine Clock | App | Rating | Price | Category | | --- | --- | --- | --- | | [Caffeine Tracking by RECaf](https://appshunter.io/ios/app/caffeine-tracking-by-recaf/id1384068352) | 4.0 (206) | Free | Health & Fitness | | [NOCAF](https://appshunter.io/ios/app/nocaf/id6740136641) | 3.9 (7) | Free | Health & Fitness | | [Barista Coffee Tracker](https://appshunter.io/ios/app/barista-coffee-tracker/id1570223740) | 5.0 (2) | Free | Health & Fitness | | [Caffeine — Track your intake](https://appshunter.io/ios/app/caffeine-track-your-intake/id6736510700) | 5.0 (1) | Free | Health & Fitness | | [CaffeineLog - Track Caffeine](https://appshunter.io/ios/app/caffeinelog-track-caffeine/id6736601220) | 5.0 (3) | Free | Health & Fitness | | [Limitless: Become Your Best](https://appshunter.io/ios/app/limitless-become-your-best/id6754427793) | 5.0 (10) | Free | Health & Fitness | ## Related topics [caffeine clock](https://appshunter.io/ios/topics/caffeine-clock) · [caffeine tracker app](https://appshunter.io/ios/topics/caffeine-tracker-app) · [caffeine](https://appshunter.io/ios/topics/caffeine) · [caffeine tracker](https://appshunter.io/ios/topics/caffeine-tracker) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-05.*