No pressure. No penalties. Just your growth — day by day, at your own pace.
Most apps punish the day you miss. Kerno celebrates the day you come back.
A missed streak is not a failure. That's why Kerno has grace days, a vacation mode and no red reminders.
You define the core — the few things that truly matter. Kerno keeps them visible and counts along, calmly and honestly.
Thoughtful, not overloaded. Every feature has one job: to make your day simpler.
A missed day doesn't break everything. Grace days bridge gaps without destroying your streak.
Focused sessions with a Live Activity in the Dynamic Island — keep the countdown in view at all times.
Steps, mindfulness & more check themselves off automatically. Read-only — your health data stays on the device.
A whole year at a glance. Spot patterns, records and your strongest days of the week.
Check off right from your home or lock screen. Your progress, without opening the app.
Export all your data as JSON or CSV — you stay in full control, anytime.
Calm, clear, thoughtful. This is what sticking with it feels like.
Unlimited tracking, no ads, no account.
Available as a subscription or one-time (lifetime) purchase.
No. Kerno works right away, with no sign-up, email or login. You just get started.
Locally on your iPhone. Your habits and your history never leave your device — we collect none of it. An export as a backup is available at any time.
Kerno reads selected values read-only to check off habits automatically. This data stays on the device, is never sent to us and never used for advertising.
Getting started is free forever (up to 3 habits). If you want more, unlock Kerno Pro — as a subscription or one-time. You'll see the prices transparently in the App Store.
Kerno is on the App Store. Build the few habits that truly matter.