20 Minute Timer — Fullscreen Flip Clock
Preset and ready — press start, no signup needed.
Twenty minutes is the classic power-nap length — long enough to recharge, short enough to avoid grogginess. It's also a great focused-study block and the interval behind the 20-20-20 eye-strain rule.
The clock opens preset to 20:00 and starts on one tap. Big flip digits make it easy to check at a glance without breaking your flow.
Tip: For a power nap, set 20 minutes and lie down right away — the goal is rest, not deep sleep. The chime will bring you back gently.
Frequently asked questions
Why is 20 minutes ideal for a nap?
It lets you rest and recharge without dropping into deep sleep, which is what causes post-nap grogginess.
Can I keep the screen on during the countdown?
Yes — run it fullscreen and the flip clock stays visible the whole time.
Does it need an account?
No. It's free to use immediately; accounts are optional and only for saving your history.
Other timers
Looking for the Pomodoro cycle timer, meditation guides, or streak tracking? Open the full FlipFocus app.