Koku
A focus timer that actually gets your attention.
Koku is a minimalist focus timer for deep work. No accounts, no streaks, no subscriptions — just a timer designed to stay out of the way until it matters.
Most focus timers are fine at counting down. The part they often miss is actually getting your attention when time is up. Koku focuses on that part — with full-screen alerts, simple controls, and no extra productivity theater.
- Full-screen alerts when your session ends
- Apple Watch support
- Live Activity and lock screen controls
- Custom session lengths
- No ads, accounts, or subscriptions
Common Questions
What is Koku?
Koku is a minimalist focus timer for iPhone and Apple Watch, designed for deep work without accounts, streaks, ads, or subscriptions.
How is Koku different from other focus timers?
Most focus timers count down quietly. Koku focuses on getting your attention when time is up, with full-screen alerts, simple controls, and no extra productivity theater.
Does Koku work on Apple Watch?
Yes. Koku includes Apple Watch support for focus sessions away from your iPhone.
Does Koku support Live Activities and lock screen controls?
Yes. Koku includes Live Activity and lock screen controls so you can track a session without reopening the app.
Can I customize focus and break lengths?
Yes. You can use the classic focus rhythm or set your own session lengths.
Does Koku require an account or subscription?
No. Koku is free to download and use, with no account setup, ads, or subscriptions.