25sec - HIIT & Tabata Timer

No complex setup. No clutter. Just the cleanest interval timer you'll ever use.
25sec handles everything in one app — HIIT, Tabata, Pomodoro, yoga, meditation,
and home workouts. When you need a workout timer, it starts in 3 seconds.

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Why 25sec interval timer?
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■ Intuitive UI you can start in 3 seconds
Even first-time users never get lost.
Everything you need from an interval timer lives on a single screen.

■ Run multiple routines back-to-back
Warm-up, main set, cool-down.
Chain several timers into one routine and run them without interruption.
Perfect for Tabata and HIIT where intervals repeat.

■ Accurate timing, even in the background
Switch apps or turn off your screen —
your workout timer stays accurate down to the millisecond.

■ Detailed stats that track your consistency
Daily workout time, rest time, and set count are logged automatically,
so you can see your progress at a glance.

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Built for
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· HIIT and Tabata enthusiasts
· Yoga, Pilates, and meditation practitioners
· Home workouts like planks and squats
· Pomodoro focus sessions for study and work
· Interval running and sprint training
· Stretching and breathing practice

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Key features
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▶ Flexible timer setup
· Precise intervals in hours, minutes, and seconds
· Fine-tune set counts and prep time
· Save and manage as many workout routines as you like

▶ Continuous mode
· Link multiple timers into a single routine
· Auto-advance to the next routine so your flow never breaks
· Ideal for Tabata and circuit training with repeating intervals

▶ Multiple alert types
· Voice countdown cues
· Choose your set-completion sound
· Vibration and haptic feedback
· Calming nature sounds during rest (birds, waves, rain, forest)

▶ Floating timer
· Keep an eye on your timer while using other apps
· Place it anywhere on screen
· Work and train at the same time with Pomodoro

▶ Detailed workout history
· Automatic daily activity logging
· Per-routine stats
· Active time vs. rest time analysis

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More
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· 4 languages (한국어, English, 日本語, 中文)
· Optimized dark theme
· Keep-screen-on mode
· Background notifications
· Works fully offline

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Tested in real yoga and fitness studios
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25sec was built and refined in real yoga studio classes,
tested directly by instructors and students.
It's a timer shaped by the people who actually use it.

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Design philosophy
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25sec is built on one principle: keep only what's necessary.
No unnecessary buttons. No interrupting pop-ups.
Just you, your workout, and your focus.
Simplicity is the most powerful tool of all.

HIIT, Tabata, Pomodoro, yoga, meditation —
start with the 25sec interval timer today.
Your 25 seconds, 25 minutes, and 25 hours will never be the same.

Questions & feedback: 25sec.support@gmail.com