Great health functions
Being able to fix my sleep and cortisol levels is so insane. Great app!
Bro so good
Love that you can track with friends 😍😍
Free
In-App Purchases
About
This app models caffeine's impact on your body, predicting when it will affect sleep. It logs drinks, visualizes intake, and offers personalized advice from an AI coach. It also integrates with health data to show sleep correlation.
✓Caffeine absorption modeling
✓Personalized AI coaching
✓Sleep impact prediction
✓Apple Health integration
✓Customizable drink logging
✓Visual intake charts
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What's New in Caffi
1.1.6
June 6, 2026
Bug fixes and reliability tweaks.
Subscription plans
Caffi Gold Monthly
AI coach + sleep stats. Renews monthly.
$9.991 Month
3 Days trialUser reviews
Developer apps
FAQ
How does Caffi track caffeine?
Caffi models caffeine absorption with a 30-minute ramp-up and a 5-hour half-life. It calculates real-time mg in your body, peak times, and sleep-safe windows based on your logged drinks.
Can Caffi help me understand my sleep?
Yes, Caffi reads your Apple Health sleep data with permission. It correlates your caffeine timing with your sleep patterns to show how much caffeine will be in your system at bedtime.
What kind of advice does the AI coach offer?
Bean, the AI coach, can answer questions like 'when should I stop today?', 'why am I jittery?', or 'how do I cut back without crashing?'. It provides concise, personalized answers based on your intake and goals.
Does Caffi have ads?
No, Caffi is designed with privacy first and does not contain advertisements. Your health data stays on device, and caffeine logs sync to your private Firebase document.
What devices does Caffi support?
Caffi is available for iPhone and iPad, designed with native iOS Liquid Glass chrome for a magazine-like aesthetic.
How often is Caffi updated?
The latest version, 1.1.6, was released on June 6, 2026, indicating recent development and support. The app was initially released on May 14, 2026.
Is Caffi suitable for all ages?
Caffi has an age rating of 4+, making it broadly accessible. Its focus on caffeine management is primarily relevant for adults.
How does Caffi's tracking compare to other apps?
Unlike apps that just count milligrams, Caffi models caffeine's pharmacokinetic behavior in the body, providing a more accurate prediction of its effects on your sleep and energy.