Karv - Build Habits That Last
Habits Get Easier Over Time
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Every habit costs energy. As you master them, they cost less. Karv models how real habits work — hard at first, automatic with time. Build up to 3 habits free.
EVERY HABIT COSTS ENERGY. SPEND IT ON WHAT MATTERS.
Karv helps you build habits that stick by showing you the real cost of each one. Start with a daily energy battery, choose the habits worth your effort, and watch them get easier as you carve them into your routine.
THE ENERGY SYSTEM
Every habit you add costs energy from your daily battery. Add too many at once and you drain it. This forces a simple question: which habits are worth your energy today?
Unlike checkbox trackers that let you pile on goals without consequence, Karv makes you feel the weight of each commitment. Three focused habits beat twenty forgotten ones.
BUILT ON SCIENCE
Karv's energy and mastery system is grounded in behavioral science. Real habits follow a cost curve — they demand discipline at first, then become automatic with repetition. Karv models this.
The more you repeat a habit, the less energy it costs. Hit milestones and the cost drops. Reach full mastery and the habit costs zero energy — it has become part of who you are. Just like real life: discipline becomes routine.
This means you can always add new habits. As old ones get easier, your battery frees up for new challenges. Your capacity grows with your consistency.
PERFECT FOR
- People who start strong but lose motivation after two weeks
- Anyone who has tried five habit apps and found them all the same
- Those who want to build a daily wellness routine without feeling overwhelmed
- People who care about progress, not just streaks
KEY FEATURES
- Energy gauge that shows your daily capacity at a glance
- Mastery milestones that reduce energy cost over time
- Streak tracking with recovery detection
- Statistics: completion rates, patterns, and trends
- Heatmap calendar to visualize your progress over time
- Custom categories to organize habits by goal
- Reminders to keep you on track
- Works offline — no internet required
YOUR DATA STAYS PRIVATE
No accounts. No cloud. No tracking. Your data lives on your device and nowhere else. Export anytime. Karv is built for people who want a private, offline-first approach to habit building.
FREE vs PRO
Free: Build up to 3 habits with full energy, mastery, and statistics.
Pro: Unlimited habits and custom categories.
Start with what matters most. Upgrade when you are ready.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://karv.ing/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Oussama Bouthouri, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Oussama Bouthouri
- Size
- 88.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Monthly subscription $1.99
- Yearly subscription $9.99
- Lifetime access $19.99
- Copyright
- © 2026 Frexes