Loop Habit Tracker has a loyal following for good reason: it’s open source, free, and one of the cleanest habit trackers available. If you’ve used Loop on Android and switched to iPhone, or if you found Loop in an article and tried to download it, you’ve already discovered the problem. Loop is Android-only. It isn’t available on the App Store.
This post covers what Loop does, why iPhone users look for alternatives, and which iPhone apps solve the same problem.
What Loop Habit Tracker is
Loop is an open-source habit tracker available on Android and F-Droid. It’s free with no subscription and no in-app purchases. The developer has maintained it since 2015, and the app has accumulated a large, active user base.
The core feature set:
Loop tracks habits using a score system rather than a simple streak counter. Each habit gets a strength score based on how consistently you complete it over time. A missed day reduces the score but doesn’t reset it entirely, which means a single bad day doesn’t erase weeks of progress.
The visual design shows habit frequency across a calendar grid. Each habit displays its score and a pattern of completions, giving a clear picture of how consistent a behavior has been over time.
Why Loop has fans:
The score model is more forgiving than a strict streak counter. Missing one day damages the score rather than resetting to zero. For people who found streak-based apps too punishing, this feels significantly more reasonable.
The app is completely free and open source. No subscription, no ads, no freemium limits. For a tracking app you’ll use daily, that pricing structure is genuinely attractive.
The problem for iPhone users:
Loop is Android-only. There is no iOS version and no indication one is planned. iPhone users searching for Loop find the app on the Play Store but can’t install it.
What iPhone users need instead
The apps that serve Loop’s use case on iPhone fall into two categories: habit trackers with a similar philosophy to Loop, and milestone trackers for goals with a specific target.
Streaks: habit tracker for iPhone, one-time purchase
Streaks is a focused habit tracker for iPhone that limits you to a deliberate set of habits and tracks completion frequency.
Pricing: One-time purchase.
How it works: You define habits with a target frequency (daily, weekly, custom), and Streaks tracks whether you complete them. The app uses a streak system rather than Loop’s score model, which means a missed day breaks the streak.
Similarity to Loop: Both track recurring behaviors. The difference is in how they handle misses. Loop’s score model softens the impact of a bad day. Streaks resets the counter.
Best for: Routines where consistency matters and breaks are uncommon. Medication, daily language practice, sleep schedules.
HabitKit: dot grid habit tracker, one-time purchase
HabitKit tracks daily habits using a dot grid. Each dot represents a day you completed the habit. The grid fills over time, creating a visual record of consistency.
Pricing: One-time purchase.
How it works: Add habits, check them off each day, watch the grid accumulate. The visual is clean and the model is simple.
Similarity to Loop: HabitKit shares Loop’s philosophy of building a consistent visual record. The model is habit-first, and the satisfaction comes from watching the pattern fill.
Best for: Daily habits with no specific endpoint. Morning routines, exercise frequency, reading habits.
Notch: milestone tracker for iPhone, $9.99 one-time
Notch is different from Loop in a fundamental way: it’s not a habit tracker. Notch is a milestone tracker built for goals with a finish line.
Pricing: Free to download. The full app unlocks with a one-time $9.99 purchase.
How it works: You set a target (500 km, 20 books, 100 sessions), log completions, and track progress toward the number. Each logged entry adds a dot to the grid and brings the total closer to done.
No streaks, no scores. Notch doesn’t measure consistency. It measures distance to a target. Take a week off and the count stays exactly where it was. Resume any time.
When Notch fits Loop users: Some people use Loop to track goals that have a specific endpoint. “Exercise 100 times,” “meditate 60 sessions,” “run every week for a year.” These goals end. When the endpoint matters, Notch is purpose-built for that use case in a way Loop is not.
For a fuller explanation of how these two models differ, see habit tracker vs milestone tracker: what’s the difference.
Comparison: Loop alternatives on iPhone
| App | Platform | Model | Pricing |
|---|---|---|---|
| Loop Habit Tracker | Android only | Habit tracker (score-based) | Free, open source |
| Streaks | iPhone | Habit tracker (streak-based) | One-time |
| HabitKit | iPhone | Habit tracker (dot grid) | One-time |
| Notch | iPhone | Milestone tracker | Free · $9.99 one-time Pro |
Choosing based on what you’re tracking
For recurring daily habits with no endpoint: Streaks or HabitKit both run on iPhone without a subscription. Both use different approaches, but both cover the same category Loop covers.
For goals with a specific finish line, a target number you want to reach: Notch fits that use case more precisely. The tracking model is built for progress toward a target, not for measuring daily consistency.
The best habit tracker alternatives for iPhone covers more options in both categories if neither of these fits.
Download Notch on the App Store — free to download, $9.99 one-time Pro unlock.
Try Notch
Every notch counts.
A milestone tracker without streaks, guilt, or subscriptions.
Download on App StoreFree · $9.99 Pro · No subscription