Control Center & Action button
Put your most important habit as a toggle in Control Center, on your Lock Screen or the Action button. One press – done.
New: Kerno 2.0 with Apple Intelligence
Habits that
Habits that
actually stick.
Your personal AI coach spots your patterns and helps you stay on track. No pressure, no punishment – 100% private on your iPhone.
Apple Intelligence
Your personal AI coach.
Kerno looks at your last four weeks and tells you what actually works – warm, concrete and never preachy.
- Your power day – the weekday you're strongest.
- Your best time of day – and where shaky habits belong.
- Daily nudge – a personal tip, written by Apple Intelligence.
- 100% private – the AI runs on your iPhone. Nothing leaves your device.
AI text: iPhone with Apple Intelligence & iOS 26. Insights: every iPhone.
New in 2.0
Type a goal.
Type a goal.
Get habits.
Just type what you want to achieve – like “sleep better”. Kerno suggests three small, doable habits. One tap and it's set up.
- Atomic Habits principle – start small, keep going.
- Pre-filled – with icon, goal and time of day.
- Or the classic way – from templates or fully custom.
Deeply built into iOS
Check off without
Check off without
opening the app.
Kerno is where you already are: in Control Center, on your Lock Screen, in Siri.
Siri
“How is my day in Kerno?” – Siri tells you what's done and what's still open.
Focus filters
Only work habits in your Work focus, only evening rituals at night.
Focus timer
Live Activity in the Dynamic Island, linked directly to your habit.
Apple Health
Steps, mindfulness, water – and now sleep. Checks itself off automatically.
Streaks that carry you
Rest days bridge gaps, vacation mode freezes your streak, and doing more than planned gets celebrated. Rest days, fixed weekdays or intervals – as flexible as your life.
Widgets
Interactive on Home and Lock Screen, including a heatmap.
Stats & badges
Year heatmap, calendar, success rates and a shareable weekly review.
Private by design
No account, no tracking, no ads. Back up to a file anytime.
Philosophy
Most apps punish the day you miss. Kerno celebrates the day you come back.
A look inside Kerno 2.0.
Pricing
Start free.
Start free.
Go Pro when you want more.
Free forever
Kerno
0 €
- Up to 3 habits
- Streaks, rest days & vacation mode
- Smart insights (preview)
- Heatmap, stats & widgets
- Control Center, Siri & backup
No ads, no account.
★ Kerno Pro
Everything. No limits.
$2.99 / month
- Unlimited habits
- AI coach & all insights
- Focus timer & Live Activity
- Apple Health automation incl. sleep
- CSV export & shareable weekly review
- All future Pro features
Or $19.99 per year, or a one-time purchase. Cancel anytime via your Apple ID. Prices may vary by region.
FAQ
Quick answers.
Is my data sent to an AI on the internet?
No. The AI coach uses Apple Intelligence directly on your iPhone. No data is sent to any server – not to us, not to third parties.
Which devices support the AI coach?
The AI text needs an iPhone with Apple Intelligence and iOS 26. Smart insights (power day, best time of day, trends) work on every iPhone.
Do I need an account?
No. Kerno works right away, without sign-up, email or login.
What happens to my Apple Health data?
Kerno reads selected values read-only to check off habits automatically. This data stays on your device and is never used for advertising.
How much does Kerno cost?
Up to 3 habits are free forever. Kerno Pro is available from $2.99 per month, $19.99 per year or as a one-time purchase.
Guide
Know-how that makes habits stick.
Practical guides on habits, focus and routines.
How to build habits that stick
Start small, set a clear cue, skip the punishment.
Atomic Habits — the 4 laws
James Clear's method, compact and practical.
The 21-day rule — myth or truth?
What research actually says (about 66 days).
Habit stacking — chaining habits
Use existing routines as cues for new ones.
How to stick to habits — even after a slip
A missed day isn't failure.
The best habit tracker app for iPhone
What really matters when choosing one.
Start with what matters.
Build the few habits that really count – with a coach who's on your side.
Download on theApp Store