Caffeine Curve vs Caffle
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Caffeine Curve
This app estimates your current caffeine level in real-time by analyzing dietary caffeine entries from Apple Health. It helps you understand how caffeine affects your body throughout the day, aiding decisions about intake and sleep. The interface is designed for quick, clear information.
- Real-time caffeine level tracking
- Caffeine absorption and elimination model
- Apple Health integration
- Lock Screen widget and Home Screen Widgets
- Peak and sleep indicators
- Personalized sensitivity profiles
- Demo mode for exploration
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Caffeine Curve helps you track your estimated caffeine level in real time. Using your dietary caffeine entries from Apple Health, the app estimates how much caffeine may still be active in your body throughout the day. It uses an absorption and elimination model to give you a more useful picture than intake alone. It is designed for a simple purpose: to give you the most useful caffeine information quickly and clearly. Whether you are deciding on another coffee, trying to stay in a good range for focus, or avoiding caffeine too close to bedtime, Caffeine Curve helps you understand where you stand right now. Features - Track your estimated current caffeine level - See how your caffeine level changes throughout the day - Reads dietary caffeine data from Apple Health - Check your current level from the Lock Screen widget - Understand how long caffeine may remain active - Clean, simple interface designed for quick checks - Rich Home Screen Widgets: Keep an eye on your caffeine levels and daily trends without even opening the app, featuring beautiful charts and gauges - Smart Complications: New rectangular and dial-top complications clearly show the exact time of your next peak or when you’ll be clear for sleep. - Useful Notifications: Get pinged exactly when you hit your caffeine peak or when your system drops below your personalized sleep-ready threshold. - Peak & Sleep Indicators: Know exactly when your coffee hits its peak and precisely when you are cleared for a good night's sleep - Unmatched Personalization: Choose from 5 different sensitivity profiles to perfectly match your unique body chemistry and caffeine decay rate - Try It Demo Mode: Explore the app's full capabilities and stunning visual charts using sample data before committing to logging your own - Beautiful & Customizable Design: Experience a gorgeous new "Liquid Glass" aesthetic that feels right at home on iOS, plus full control over Light/Dark modes and all-new tinted app icons. Caffeine can be logged automatically by other apps that write to Apple Health, or added manually in the Health app under Nutrition > Caffeine. Caffeine Curve is free to use, with no ads and no in-app purchases. It was built from a real daily need: a simple way to understand caffeine levels clearly, quickly, and without unnecessary extras. Important Individual caffeine metabolism varies. Factors such as genetics, liver health, medications, and pregnancy can affect absorption and elimination. Caffeine Curve is for informational purposes only and does not provide medical advice.
Caffle
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Know exactly how much caffeine is in your system, and when it's time to stop. Caffle makes caffeine tracking effortless. Log your coffee, tea, matcha, or energy drink in two taps and watch your caffeine level rise and fall in real time. TODAY AT A GLANCE • See your current caffeine level against your daily limit • Clear status pills tell you where you stand: in the clear, approaching your limit, or over it • Know when the caffeine from your last cup will wear off SLEEP SMARTER • Caffle projects how much caffeine will still be in your system at bedtime • Check your sleep outlook before that afternoon espresso • Build habits that protect your rest TRACK EVERY DRINK • Espresso, latte, cold brew, matcha, tea, soda, energy drinks, and more • Review your history and spot weekly patterns BUILT FOR iPHONE • Syncs your caffeine intake with Apple Health • Fast, clean, and private Download Caffle and take control of your caffeine, one cup at a time. Terms of Use: https://appstore.devjmc.com/caffeinetracker/terms
Screenshots
Verdict
The clearest difference is in-app purchases: Caffeine Curve at none against Caffle's 3. 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. Caffle sells 3 in-app purchases, starting at $9.99 per 7 days. Caffeine Curve asks for nothing beyond the download.
Caffeine Curve ships an update fortnightly, Caffle monthly. The most recent releases landed on October 10, 2026 and September 27, 2026 respectively.
| Parameter | Caffeine Curve | Caffle |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Fortnightly — better | Monthly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 4 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Haris Delalic | JACOB COX |
In-app purchases
Caffeine Curve
No in-app purchases
Caffle
- Caffy Pro Weekly$9.997 Days
- Caffy Pro Yearly3 Days trial$49.991 Year
- Caffy Pro Lifetime$49.99









