Kronos
Early access

Kronos is open. You’re early, and that’s the point. We’d rather refine the edges with you than without you. Walk with us.

The free interval timer
that doesn’t sell you a subscription.

HIIT, Tabata, EMOM, AMRAP. Plus full custom. No ads. No account. No "Pro" tier.

Time is the unit. The timer is too.

Thalia extending a phone toward the viewer, its screen showing the Kronos interval timer setup with work, rest, exercises, rounds, and a Start Workout button.

Four presets

Ready to go.

Tap one. Tap start. Lift.

HIIT

40s work · 20s rest · 8 exercises · 3 rounds

Tabata

20s on · 10s off · 8 intervals

EMOM

Every minute on the minute · 10 minutes

AMRAP

As many rounds as possible, self-paced

Or build your own.

Five inputs: work, rest, exercises, rounds, reset between rounds. Tap the field, change the number. Save it for next time. Free.

What it does without asking

Built to stay out of your way.

  1. 01

    Set it down. Walk away.

    The screen stays lit the whole workout, so every beep and buzz lands without you waking the phone or tapping a thing.

  2. 02

    Plays nice with your music.

    Spotify, podcasts, whatever. Our cues mix on top. No ducking, no fade-out.

  3. 03

    Save unlimited presets.

    Build a 40/20/8/3 once. It’s there forever. No account, no cloud, no upsell.

  4. 04

    No ads. Not now, not ever.

    You don’t need a paywall to remove ads we never put there.

Why it’s free.

Our footer reads: time is the unit.

The timer is the literal expression of that. Charging for it would be charging for the unit. So we don’t.

What everyone else does.

No shade. Just the room we’re in.

Most timer apps

Free until you want to save a config.

Kronos

Save everything. Free.

Most timer apps

Free with ads between rounds.

Kronos

No ads. Ever.

Most timer apps

One timer free. Pay for two.

Kronos

Unlimited custom timers.

Most timer apps

Sign up before you start.

Kronos

Open it. Hit start. Lift.

Their apps are good apps. They made different choices.

How the free interval timers compare

Idris extending a phone toward the viewer, its screen showing a Kronos AI-generated workout: High Intensity Pull, 23 minutes, four blocks, with a Start Workout button.

By the way

The app also picks workouts.

If you don’t feel like setting the timer yourself, Kronos has the rest of the app ready: one tap, today’s workout, shaped to your equipment and your time.

Launching soon

Free interval timer. Always.

iPhone and Android. No account. No catch.

App Store Download on the App Store Soon Google Play Get it on Google Play Soon

First through the door

Want the link the day it lands?

Drop your email. We’ll send the download link the day Kronos goes live, and nothing else.

One email, the day we launch. No spam, no sharing your address.