Just One vs Leave Check
Price, ratings, monetisation and update history for both apps, side by side β 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
Leave Check
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Have you ever left home and suddenly wondered: Did I lock the door? Did I close the windows? Is the stove off? Did I bring my keys, wallet, or documents? Leave Check is a simple checklist app for the moments before you leave. It helps you confirm important things once, save a timestamp, and reduce the urge to go back and check again. Built for everyday routines: Leaving home: door, windows, stove, lights, appliances, keys, wallet, phone Before travel: documents, charger, luggage, fridge, trash, doors, windows, outlets Bedtime check: doors, windows, stove, alarm, phone charging, tomorrowβs essentials Leaving the office: computer, monitor, files, AC, lights, access card Leaving a hotel: documents, charger, bathroom, drawers, closet, room card What you can do: Start quickly with built-in checklist templates Tap each item to confirm it clearly Save completed checks with time records Review your recent check history Set local reminders for routines you use often Create custom templates for your own habits Add and adjust checklist items as your routine changes Why it helps: Most of the time, the problem is not that you forgot to check. The problem is that later, you are not sure whether you checked. Leave Check turns that moment into a clear action: open a checklist, confirm each item, and keep a record you can look back on. Privacy and Pro: Your checklists and history are stored locally on your device by default. No account is required. Some advanced features can be unlocked with a one-time Lifetime Pro purchase, not a subscription. Basic checking remains available for free. Check once before you leave. Look back less after you go. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://lijunchenapp.com/LeaveCheck-PrivacyPolicy.html
Screenshots
Verdict
Just One and Leave Check are too close to call on the numbers: across 5 compared parameters β price, ads, in-app purchases and device support among them β neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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
Both are free to download. Just One sells 3 in-app purchases, starting at $1.99 per month and Leave Check sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | Just One | Leave Check |
|---|---|---|
| Price | Free | Free |
| Update frequency | β | Monthly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.0 β better |
| Further details β not scored | ||
| Size | 4 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Diego Garcia-Viana | δΏθΎ° ι» |
In-app purchases
Just One
- Monthly Premium Subscription$1.991 Month
- Annual Premium Subscription3 Days trial$9.991 Year
- Lifetime Premium Subscription$14.99
Leave Check
- Lifetime Membership$2.99









