Kairo Timer

Kairo Timer — the workout timer that just does the job, minus the distractions.

One circuit, one duration, one tap. That's it. No account, no coaching, no distractions. Just a timer built so you can stop thinking about the timer.

THREE WAYS TO TRAIN

• Prefab circuits — classic Tabata, a full time-based circuit, a target-reps circuit. Ready to launch in one tap.
• Editor — build your own circuit: name, rounds, rest, exercises, target reps or duration. Every detail is yours.
• Smart generator — pick zone, level, duration, equipment, format. The app composes a balanced circuit you can tweak before you start.

THREE EXERCISE MODES

• Time — auto countdown, perfect for HIIT and Tabata.
• Target reps — a fixed number; you confirm when it's done.
• Free reps — you count, you enter, the app keeps track.

BUILT FOR THE EFFORT

• A calm screen to navigate, a battle screen for action: background colors follow the segment (prepare, work, rest, final countdown).
• 3-2-1 countdown and segment-start beeps. Haptic feedback.
• Screen stays on during the workout.
• End-of-session summary: total time, exercises completed, reps logged.

WHAT'S NOT HERE

• No account. No sign-up. No email asked.
• No ads, no data collection. Nothing leaves your phone.
• Your custom circuits are stored locally only.

WHO IT'S FOR

Home trainers, bodyweight regulars, runners cross-training, HIIT fans — anyone who wants a clean timer without drowning in menus.

Kairo — inspired by the Japanese 回路 (circuit) — is the discipline of emptiness: less noise, more action.

Download, start a Tabata, go.