CaffeineHalf: Caffeine Tracker

Takumi Sekiguchi · Food & Drink

Free

Chart standing · US

Not currently charting in this storefront.

What changed · US

Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.

Aug 26, 2026
Price change 1.99 USD → Free
Aug 26, 2026
New version 1.0.1 → 1.0.2

Improved app stability and minor refinements.

Price & rating history · US

Reconstructed from the listing changes AppTracker has observed in this storefront, so each line starts at the first change on record.

Price history in USD over the observed period. 0 1 2 Aug 26 15:40 Aug 27 06:59 Aug 27 22:19 Aug 28 13:38 Aug 29 04:57

Price · USD

About

Track your caffeine intake and see exactly how much will remain in your system at bedtime — based on the pharmacokinetic half-life model (approximately 5-6 hours). Features: - Auto-calculate caffeine from drink type - Half-life based residual caffeine prediction - Set bedtime for countdown estimation - Time-decay graph visualization - Custom drink registration - Daily intake history Great for: - People sensitive to caffeine's sleep effects - Anyone improving their sleep quality - Optimizing caffeine timing for productivity - Managing intake during pregnancy or nursing Based on pharmacokinetic half-life modeling — goes beyond simple intake counters to predict actual residual caffeine levels. Fully offline. All data on device. No ads. One-time purchase.

What's new · 1.0.2

Improved app stability and minor refinements.

Details

ReleasedJul 2026
UpdatedJul 2026
Version1.0.2
Size2 MB
RequiresiOS 16.0 or later
Age rating4+
LanguagesChinese, English, French, German, Japanese, Korean, Spanish
PriceFree
Categories Food & Drink
Bundle IDcom.smallappworks.caffeinehalf