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
Is Koku free?
Yes. Koku is free to download and use.
Does Koku require an account?
No. There’s no account setup.
Does Koku include subscriptions or ads?
No subscriptions, no ads.
Does Koku work with Apple Watch?
Yes. Koku includes Apple Watch support.
Can I change session lengths?
Yes. You can use the classic rhythm or set your own durations.
Where can I send feedback or report a bug?
Use the Support / Feedback page.