Caffeine Tracker - SipLog is made and published by
Gruffydd Johnston.
AppBrain is an independent app data site and isn't affiliated with Gruffydd Johnston.
The app name, icon, screenshots and description belong to Gruffydd Johnston and are shown as
published on the App Store.
About Caffeine Tracker - SipLog
Caffeine Tracker - SipLog is a health & fitness app developed by Gruffydd Johnston.
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App Information
Caffeine Tracker - SipLog is freely available from the App Store. The app size is 14.71 MB. The latest version available is 2.0. The last update was on October 10, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since June 2025.
Description by Gruffydd Johnston(from the App Store)
Know when your caffeine wears off.
SipLog tracks every coffee, tea and energy drink and estimates how much caffeine is still in your system right now. See the curve for your day, how far you are into your daily guide, and the time you'll be sleep-ready.
LOG IN ONE TAP • Tap a drink to log it, or touch and hold to change the size or time • Undo straight away if you tap the wrong one • Search a library of coffees, teas, sodas and energy drinks, or enter any amount • Save your usual order with its exact caffeine
KNOW WHEN YOU'LL SLEEP • A live estimate of caffeine in your system, based on its half-life • Your sleep-ready time, and how each drink would change it before you log it • A cut-off reminder before the last time a coffee will wear off by bedtime • Set your own daily guide, bedtime, half-life and sleep-ready level
WIDGETS AND LIVE ACTIVITY • Home Screen and Lock Screen widgets showing caffeine now and when you'll be sleep-ready • Log your usual drinks straight from the widget • A Live Activity counts down to sleep-ready on your Lock Screen and in the Dynamic Island
SEE YOUR PATTERNS • Daily, monthly and yearly trends against your guide • Caffeine still active at bedtime and when you usually have your last drink • See how caffeine affects your sleep, using sleep data from Apple Health • Export your history as CSV
PRIVATE BY DESIGN • Drinks you log are saved to Apple Health if you choose, and sync with iCloud • Sleep data is read only when you turn on the sleep report, and never leaves your iPhone
SIPLOG PRO Pro unlocks your sleep-ready time and what-if preview, the sleep report, the Live Activity, month and year trends, and saving your own drinks. Pro is available as a monthly or yearly subscription, with a free trial for new subscribers. Payment is charged to your Apple Account when you confirm the purchase, or at the end of the free trial. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your Apple Account settings.
SipLog gives estimates for awareness. It isn't medical advice.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://siplog-website.vercel.app/posts/privacy/
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
