One Habit vs Sync
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
One Habit
Read full descriptionHide full description
One habit changes everything. Not five goals. Not a long list of resolutions. One habit - tracked daily, backed by everything science knows about behavior change. Most habit tracker apps overwhelm you with features. One Habit does the opposite. It strips everything down to what actually works: one clear focus, one personal reason, and every psychological tool in the book to help you follow through. Built to make you stick - not just track. WHAT MAKES ONE HABIT DIFFERENT One habit at a time Research consistently shows that trying to build multiple habits at once leads to failure. One Habit keeps you focused on the single change that matters most right now. Your photo. Your reason. Your fuel. Add a personal photo and write your why. Every time you open the app, you're reminded not just what you're doing - but why it matters to you. More than yes or no Some days you give it 100 percent, some days 40. Log how it actually went, add a one-line note, and keep an honest record instead of a flattering one. Your chart tells the truth. Every habit you finish becomes a card Complete a habit and it turns into a collectible card. Flip it over for your stats and the thoughts you noted along the way. Your shelf of proof. Daily reminders that actually reach you Set a daily reminder at your chosen time, in your own words. One Habit keeps your goal visible even when life gets busy. Home screen widget Your habit - with your personal photo and motivational line - and your streak live on your home screen. One tap to mark it done, without even opening the app. Miss a day? Spin your way back. Life happens. One Habit doesn't punish you for missing a day - instead, it gives you a chance to rescue your streak with a small make-up task. Because consistency over time matters more than perfection. WHO IS ONE HABIT FOR One Habit is for anyone who has started a habit tracker before - and quit. For anyone who knows what they want to change but can't seem to make it last. For anyone who's tried willpower alone and found it wasn't enough. This app was built by someone who needed it. Every feature exists because it solves a real psychological barrier to follow-through. FEATURES Habit tracker with a daily percentage check-in Personal photo and motivation text Daily reminder notifications Home screen widget Visual consistency tracker Collectible cards PDF export of your progress Works fully offline No account required PRIVACY Your habits, photos and notes stay on your device. The only exception is your purchase, handled by Apple and managed by RevenueCat. One Habit - so you don't forget why you started.
Sync
This app helps you compare your planned schedule with your actual daily activities. It visualizes where your time goes, highlighting discrepancies and helping you identify time-wasting habits. Integrate with Apple Health and Calendar for automatic tracking.
- Dual timeline for plan vs. actual
- One-tap confirmation of planned activities
- Habit and repeat plan creation
- Real-time timer tracking
- Goal setting and to-do lists
- Apple Health and Calendar integration
- iCloud sync across devices
Read full descriptionHide full description
Few days go exactly as planned. Sync lines up your plan and what you actually did on one timeline, and shows where they part. After a week, the hours that always slip become obvious. Plan your day in the morning, record what you did in the evening, and the two tracks line up side by side. Time that went as planned and time that drifted show in color. β Two tracks Plan and actual share one time axis. Drag over the hours, pick an activity, done. β One tap to confirm When a plan ends, a notification and a confirm card offer three buttons: Record as planned Β· Adjust and record Β· Skip. The buttons are right on the Lock Screen and in widgets. β Repeats and habits Turn a plan into a repeat or a habit as you save it. When you edit a repeating plan, choose "Save for this day only" or "Save for all future days." Plans that run past midnight save in one go. β Timer Start a timer and the actual track grows in real time. Stop it from the Lock Screen or the Dynamic Island. β Goals and to-dos Set weekly, monthly, or yearly time goals per activity and they fill in from your actuals. To-dos can have both a scheduled day and a deadline. β Apple Health, Calendar, Reminders Connect Apple Health (HealthKit) and your workouts and sleep β from Apple Watch or any app that writes to Health β flow into the actual track automatically. Read-only: Sync never writes to Health. Calendar events show beneath the plan track; choose which calendars to show, and the activity is picked for you when you import an event. To-dos stay in sync with a Reminders list. β Close the day Close your day before bed to see your Sync and time per activity, and leave a one-line note. β iPhone and iPad On iPad, Sync uses views made for the larger screen. Turn on iCloud sync to keep records in step on an iPhone and iPad signed in to the same Apple Account. Sync works only between Apple devices. Your records are stored on your device. With iCloud sync on, they move only through your own iCloud. No sign-up, no server of ours.
Screenshots
Verdict
The clearest difference is price: One Habit at Free against Sync's $4.99. One Habit also leads on iOS requirement (15.0 vs 18.0). Sync's advantage is in-app purchases (none vs 1) and update cadence (weekly vs monthly). On ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
One Habit is free to download; Sync costs $4.99 up front. One Habit sells 1 one-off in-app purchase. Sync asks for nothing beyond the download.
One Habit ships an update monthly, Sync weekly. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.
| Parameter | One Habit | Sync |
|---|---|---|
| Price | Free β better | $4.99 |
| Positive reviews | β | 100.0% of reviews |
| Update frequency | Monthly | Weekly β better |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Monetization | β | Paid |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 β better | 18.0 |
| Further details β not scored | ||
| Size | 51 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Sandra Zanglein | 037 |
In-app purchases
One Habit
- One Habit Lifetime$9.99
Sync
No in-app purchases









