Lucid vs Onulchi
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Lucid
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Ever had a great idea, written it down, and never found it again? Notes apps just pile up. All-in-one tools get overwhelming. Lucid sits in between. β Catch the 3 seconds it lives Tap the home screen widget and start typing. Don't pick a type or a place β just get it down. β Organize in 5 minutes a day Swipe through your thoughts and answer one thing: "Where does this go?" No jargon β Projects, Areas, Resources, Archive. β Today, only what matters Open the app and today's tasks come first. Each one done is a small win. β Your second brain, in your hand No account, no login. Every thought stays safe on your iPhone. Stop losing your best ideas. Let Lucid remember them for you.
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 - 2Γ 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
Lucid and Onulchi are too close to call on the numbers: across 6 compared parameters β price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Lucid ships an update every 3 days, Onulchi every 2 days. Both last shipped on October 31, 2026.
| Parameter | Lucid | Onulchi |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days | Every 2 days β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 | 16.4 β better |
| Further details β not scored | ||
| Size | 2 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Goo wong Kwon | CHOHEE KIM |
In-app purchases
Lucid
No in-app purchases
Onulchi
No in-app purchases









