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Everyone
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Everyone
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About this app

Have you ever stayed up all night because a single cup of coffee made your heart race?

Everyone breaks down caffeine at a different rate. 'cafe in' is not just an app that records your intake. Based on your body's data, it predicts when caffeine will be completely eliminated and provides an optimal intake guide to avoid disturbing your precious sleep.

■ Real-time Visualization of Remaining Amount in Body

Check the amount of caffeine slowly breaking down from the moment you drink it in a real-time graph. By applying a scientific half-life calculation method, it intuitively shows you how much caffeine is currently remaining in your body.

■ Analysis of Your Personal Caffeine Limit

Check the recommended intake based on your weight, gender, and age, and record any side effects you have experienced (palpitations, insomnia, etc.). As data accumulates, 'cafe in' will tell you the exact limit of how many milligrams of caffeine you can consume before feeling discomfort.

■ Sleep Protection Reverse Calculation Alert

"Please only drink until 3 PM today!"

Based on your set bedtime, it calculates backward the time it takes for your body's caffeine concentration to drop to a safe level. Here is a guide on when to finish your last drink for a good night's sleep.

■ Simple and minimal recording. No more complicated input! Add your frequently consumed beverages to favorites and record them with a single touch.
Updated on
Apr 18, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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What’s new

증상 부분 기록시 실제 입력한 내용과 리스트에 보이던 내용이 불일치 하던 점을 수정했습니다.
Content rating
Everyone
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App support

About the developer
오승재
victoryashes@gmail.com
South Korea