Just One vs CheckOne
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Just One
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Most people fail not because they lack motivation, but because they try to do too much at once. Just One is built on a single principle: identify the one thing that would make today successful, then do it. No task lists. No projects. No overwhelm. Just one intention per day. HOW IT WORKS Every morning, you write your One Thing. One sentence. One goal. That is all. When you are ready, you start a Focus session. A clean, distraction-free timer counts down while you work. No notifications. No interruptions. Just you and your task. At the end of the day, you answer one question: did you complete it? Your streak grows with every yes. FOCUS TIMER Built-in Pomodoro-style timer from 1 to 90 minutes. Fully adjustable before each session. Vibration and local notification when your session ends, even if the app is in the background. STREAKS AND HISTORY Watch your consistency grow day by day. Your history shows every entry at a glance, with a simple record of what you set out to do and whether you did it. Every entry is yours, backed up securely to the cloud. DESIGNED TO DISAPPEAR Just One is intentionally minimal. No cluttered dashboards. No gamification traps. No badges demanding your attention. The app gets out of your way so you can do the work. Dark mode, light mode, and system-adaptive appearance. Clean typography. Generous whitespace. It feels as calm as the habit it builds. CLOUD SYNC Sign in with Apple in one tap. Your tasks and history sync automatically across all your devices. Delete and reinstall without losing a single day. PREMIUM Unlock unlimited history, advanced focus insights, and full cloud backup with Just One Premium. Available as a monthly subscription, annual subscription, or a one-time lifetime purchase. --- Just One is made for people who are serious about doing less, better. One task. One day. One streak at a time. --- LEGAL Terms of Use: https://smartaiforgesl.github.io/justone_legal_documents/terms-of-use.html Privacy Policy: https://smartaiforgesl.github.io/justone_legal_documents/privacy-policy.html
CheckOne
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CheckOne shows checklist items one at a time so you can confirm everything without missing anything. Create checklists for things you want to confirm in order, such as before going out, travel prep, leaving a hotel, before a meeting, gym items, morning routines, or bedtime routines. Instead of looking at a long checklist all at once, CheckOne shows the current item clearly and lets you move forward as you check each one. It helps you focus on the next thing to confirm. CheckOne also supports Apple Watch. You can view checklists, start a run, check items, and keep the run state in sync with iPhone. Templates are included so you can start quickly, and you can also create your own checklists from scratch. Features - Create and edit checklists - Create from templates - Run a checklist one item at a time - Move items later and optionally save the new order - Choose checklist colors - Sync run state with Apple Watch - Haptic feedback while checking items - Double Tap support on Apple Watch CheckOne Plus CheckOne Plus unlocks every feature with one purchase, including creating multiple checklists, choosing any color, and moving items later. Note: Double Tap is available on supported Apple Watch devices with watchOS 11 or later. Terms of Use: https://apps.mishimadesign.com/checkone/legal.html#terms-en
Screenshots
Verdict
Just One and CheckOne are too close to call on the numbers: across 5 compared parameters โ price, ads, in-app purchases and device support among them โ neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Just One sells 3 in-app purchases, starting at $1.99 per month and CheckOne sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | Just One | CheckOne |
|---|---|---|
| Price | Free | Free |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Requires iOS | 17.0 | 17.0 |
| Further details โ not scored | ||
| Size | 4 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Diego Garcia-Viana | Mishima Design |
In-app purchases
Just One
- Monthly Premium Subscription$1.991 Month
- Annual Premium Subscription3 Days trial$9.991 Year
- Lifetime Premium Subscription$14.99
CheckOne
- CheckOne Plus$9.99









