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Caffeine Calculator & Tracker

Live Level & Sleep
ZHENGYU WANG · Health & Fitness
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App info

Developer
ZHENGYU WANG
Category
Health & Fitness, Lifestyle
Released
Sep 27, 2026
Version
1.0 (Sep 28, 2026)
Price
Free
Size
2.1 MB
Requires
iOS 18.0
Age rating
13+
Languages
English, Japanese, Simplified Chinese

In-app purchases

Lifetime Exit Offer$14.99
Annual Exit Offer$9.99
Lifetime Access$19.99
Annual Access$12.99
Monthly Access$2.99
Current prices, App Store US.
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About Caffeine Calculator & Tracker

Caffeine Calculator helps you understand how your next coffee, tea, cola, or energy drink may affect the rest of your day and tonight's sleep. - Log common drinks quickly using practical serving-size estimates - Personalize estimates with weight, schedule, and research-supported metabolism factors - See estimated caffeine remaining now, a possible bedtime range, and a suggested last-drink time - Touch the metabolism curve to read estimates at a specific time - Review 7- and 30-day intake, timing, and bedtime residual trends - Explore your year in review with monthly totals and unlogged days, then preview a locally generated image before choosing to share it - Save custom drinks, keep long-term history, and export CSV - Choose from five themes with matching app icons No account is required. The current version contains no ads, third-party analytics, or cross-app tracking. Your…
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