BrewMeter - Caffeine Tracker

Log caffeine in seconds, then see when your current intake is expected to fall below your chosen sleep threshold. BrewMeter keeps the next useful step clear without requiring an account.

NEW IN 1.3

- Create and reuse custom beverages.
- Log from the app, interactive widgets, Siri, or Shortcuts.
- Optionally adapt your caffeine cutoff from HealthKit sleep patterns, only after you confirm the change.
- Receive one evidence-based weekly priority with one action.
- Keep all core features free, private, and account-free.

SEE YOUR CURRENT CAFFEINE

View an estimated caffeine curve based on what you log and your selected half-life. Check when the estimate falls below your sleep threshold and decide whether another drink fits your plans.

LOG YOUR WAY

Choose from common drinks, save your own beverages, and reuse favorites. Add an entry in the app or use an interactive widget, Siri, or a Shortcut when speed matters.

PLAN WITH CONTEXT

Use the what-if simulator before adding a drink. With optional HealthKit permission, BrewMeter can compare recent sleep timing with your cutoff and suggest an adjustment. Nothing changes until you confirm it.

ONE WEEKLY PRIORITY

Get one focused, evidence-based priority each week with one practical action, based on the entries stored on your device.

PRIVATE BY DESIGN

No ads, no tracking, and no account. Core features are free. Your data stays on your device and in your private iCloud storage; optional HealthKit access remains under your control.

Also included:
- Day, week, and month history
- Daily intake goals
- CSV export
- iCloud sync across your devices
- Localized experience in eight App Store languages

BrewMeter provides estimates for personal awareness and is not medical advice.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://bnjdpn.github.io/BrewMeter/privacy.html