A brew helper with a ratio calculator and a method-specific brewing timer. Made by Jordan Matthiass.
Calculator: Choose your brewing method, then adjust the coffee weight, water weight, or ratio. Edit any two values and the third calculates automatically.
Timer: Start brewing and the app tracks elapsed time, highlights the current step, and previews the next step with a countdown.
On the Lock Screen: A Live Activity follows your brew on the Lock Screen and in the Dynamic Island, advancing through each step on its own. Leave the app and a notification lets you know the moment your brew is ready.
Supported methods: V60, V60 4:6, V60 Onyx, Chemex, French Press, Aeropress, and Moka Pot.
Can I use the calculator without the timer?
Yes. The calculator works on its own for quick ratio math any time.
No accounts, no analytics, no network requests. The app runs entirely on your device and works completely offline.
For questions, bugs, or feature requests, Email me.
If you enjoy Simple Coffee Timer, a review on the App Store goes a long way. Thank you.
© 2026 Jordan Matthiass. Requires iOS 17.6 or later.