Simple and quite
Does not make me to worry with notifications, and at any time I can see my progress on the widget.
Free
In-App Purchases
About
This app helps you track your progress in staying sober or quitting other habits. It focuses on a private, ad-free experience with customizable widgets for your home and lock screens. Track multiple habits and milestones without external data collection.
✓Home and lock screen widgets
✓Ad-free and private experience
✓Track multiple habits
✓Customizable habit labels
✓Milestone tracking
✓Editable start dates
✓Preserves personal best across resets
Show original description
+1
What's New in Kern
0.5.7
November 5, 2026
Kern now speaks Japanese. The whole app is in Japanese — the day count, the milestone words, the notifications that arrive on day 7 and day 90 — and so is its App Store page. Day counts follow Japanese counting, not English's. Nothing about your count changes.
More1
Subscriptions & In-App Purchases
$6.99
Kern Pro
More than one count, each with milestones.
User reviews
Developer apps
FAQ
Does Kern have ads?
No, Kern is completely ad-free. The app explicitly states 'No ads' in its description, ensuring an uninterrupted user experience.
How much does Kern cost?
Kern is free to download and use for tracking one habit. Tracking more than one habit requires a single purchase, which is not a subscription and does not renew.
What devices does Kern support?
Kern is currently supported on iPhone devices. The app is designed to integrate with iOS features like the lock screen and home screen widgets.
How often is Kern updated?
Kern was last updated on November 5, 2026, indicating a recent update. The version number is 0.5.7.
What is the age rating for Kern?
Kern has an age rating of 12+. This suggests it is suitable for users aged 12 and above.
Can I track multiple habits with Kern?
Yes, you can track multiple habits with Kern. While the app is free for one habit, tracking additional habits is available through a one-time purchase.
Does Kern collect user data?
No, Kern is built for privacy and collects no user data. It emphasizes that everything stays on the device, with no accounts or analytics.
What makes Kern different from other sobriety apps?
Kern differentiates itself by offering a quiet, private experience without community feeds, daily streak guilt, ads, or data collection. Its focus is on simple, on-device tracking with customizable widgets.
