Know when it's
safe to sleep.

Matcha models how caffeine clears from your body — a half-life of about 5.5 hours by default, adjusted for your caffeine sensitivity (4.5–6.5 hours) and, if you choose, your body weight. From your drinks and your bedtime it works out your coffee cutoff — the latest you can have your usual coffee and still be under your bedtime caffeine target (50 mg by default, adjustable) — and the time you'll be sleep-ready. It's an estimate, not medical advice — everyone processes caffeine a little differently.

Yes — Matcha is free to download, and the essentials are free forever: unlimited logging, your live coffee cutoff and sleep-ready time, “What can I drink?”, cutoff reminders, Home Screen and Lock Screen widgets, the Live Activity, Siri & Shortcuts, Apple Health caffeine sync, the 7-night chart, 7 days of history and the Apple Watch app. Matcha Pro adds the “Will it hurt my sleep?” preview, the weekly sleep score and tips, the Apple Health sleep comparison, unlimited history, weekly reports, themes, custom drinks and smart reminders. Pro is $2.99/month or $19.99/year — both with a 7-day free trial for eligible new subscribers — or $49.99 once for lifetime access (US prices; local prices vary).

Yes. Matcha saves your caffeine to Apple Health for free, and with Matcha Pro it reads your sleep from Apple Health to show how the two line up. You can also log a drink or check your status right from your Apple Watch.

Matcha includes about 400 drinks with researched caffeine values — everyday favorites in small, medium and large, common coffees, teas, sodas and energy drinks, and popular picks from 28 coffee, tea and energy brands. With Matcha Pro you can also create custom drinks with your own caffeine amount.

No. Cutoff reminders are optional and send at most one gentle reminder a day — 30 minutes before your coffee cutoff. With Matcha Pro, they adapt to what you've actually had today.