About app
Doppio is a native caffeine tracker for coffee lovers who want to know — not guess — what is in their bloodstream. Log every espresso, cold brew or matcha and watch your caffeine level rise and fall in real time, modelled on a five-hour half-life.
- 21 preset drinks plus custom amounts, with a live curve that updates second by second
- Predictions for when you drop below 100 mg and when you can reasonably sleep
- A brew calculator for 9 methods — espresso, AeroPress, V60, Chemex, French press, moka pot, cold brew, pour over and drip — with a timer that runs as a Live Activity
- A detox planner over 7, 14, 21 or 30 days, with symptom logging and a daily ceiling that steps down each morning
- Two-way Apple Health sync for caffeine intake, plus sleep quality readings from the last 7 nights
- Widgets in three sizes, five themes, and no accounts — data stays in SwiftData on your device
Screenshots
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