Master consistency in every batch — no matter the weather.

CoffeeRoastMate is not just a timer; it’s a precision tool for anyone who cares about the science behind the bean — from home enthusiasts to small-batch professionals.

Ambient temperature and humidity are invisible variables that can disrupt even a perfect roast profile. Cold air extends the Drying phase; humidity changes heat transfer. CoffeeRoastMate analyzes your local weather conditions instantly and helps you adjust your plan before you even drop the green beans.

Why CoffeeRoastMate?

- Weather Intelligence


Automatically fetches localized temperature and humidity to suggest precise adjustments for your Drying, Maillard, and Development phases.

- Predictable Results


Stop guessing. Compensate for environmental variables and hit your target roast levels consistently.

- Profile-Aware Calculations


Select your target roast profile — light, medium, dark, or custom ratios — and the app adapts timing recommendations accordingly.

- Bean-Specific Adjustments


Choose your coffee bean type to factor density and processing characteristics into the suggested plan.

- Privacy First


All calculations run locally on your device. No accounts, no tracking, no cloud uploads.

Key Features

- Real-time Roast Difficulty Index based on weather
- Dynamic phase timer with large, glanceable controls
- Visual phase breakdown (Drying / Maillard / Development)
- Optional, secure offline roast logging
- Clean, distraction-free interface for active roasting
- Works offline after the initial weather update

Zero Paywalls. 100% Indie.

This app is completely free — no subscriptions, no ads, no locked features.

If it helps you roast better, you can optionally support future development through the Tip Jar — purely optional.

Happy roasting!