ONE vs Onulchi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ONE
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Not another to-do list. ONE Focus is a single-task focus timer for a deeper life. You commit to one thing at a time—nothing else on screen, nothing competing for your attention. WHY ONE FOCUS? • One thing only — no lists, no tabs, no clutter • Start in one line — type a title, press return, begin • Gentle accountability — a progress check-in every 45 minutes • Five-step progress — 0, 25, 50, 75, or 100%, with an optional note • Quiet by design — no streak anxiety, no gamification, no noise • Night quiet hours — no notifications between 22:00 and 09:00 • Minimal history — see what you've finished, nothing more HOW IT WORKS 1. Enter one thing and start 2. Stay with it — elapsed time keeps you honest 3. Respond to check-ins when prompted (or update progress anytime) 4. Mark complete when you're done 5. Move on to the next moment DESIGNED TO FEEL CALM Editorial Noir typography, generous whitespace, and champagne-gold accents. Dark-first. No feature bloat. No account required. Everything stays on your device. Built for focus, study, deep work, and everyday presence—reading to your child, cooking a meal, taking a walk, creating something meaningful, or simply being here. Download. Pick one thing. Live it fully.
Onulchi
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Onulchi turns the routine you design into a daily game. "Onulchi" means "today's share" in Korean: you don't have to be perfect, you just have to do today's share. YOUR ROUTINE, YOUR POINTS Pick from suggested tasks across 9 categories, from waking up and eating well to workouts, focus, and time with people who matter. Or create your own. You decide how many points each task is worth. REACH 100 TO CLEAR THE DAY Check off what you did and watch the gauge fill. Reach 100 points and the day is cleared. Add more than 100 points' worth of tasks, and you can clear the day without doing everything. A WEEKLY REWARD YOU CHOOSE Earn 600 points in a week and treat yourself to the reward you picked. It's set at 600, not 700, so one slow day won't cost you the week. LEVELS AND WISHES Write one wish for each level. Clear 30 days in a row to level up. Miss a day and the count starts over, but your level stays. BUILT FOR HARD DAYS - 2× bonus: tasks you get done on weekends or hard days earn double. - Rest days keep your streak safe. - Must-do tags highlight the tasks that matter most. SEE YOUR WEEK Switch between Today and Week views, fill in days you forgot, and check your stats by week or month. SIMPLE AND PRIVATE - Free, with no ads and no in-app purchases. - Sign in with a one-time email code. No password to remember. - No tracking or analytics. You can delete your account and data in Settings at any time. Questions or ideas: viva.shinjadu@gmail.com
Screenshots
Verdict
The clearest difference is update cadence: Onulchi at every 2 days against ONE's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ONE ships an update every 2 weeks, Onulchi every 2 days. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.
| Parameter | ONE | Onulchi |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 2 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | 骋飞 æ¦ | CHOHEE KIM |
In-app purchases
ONE
No in-app purchases
Onulchi
No in-app purchases









