Nakseojangssi: One Line a Day
One line a day, with a prompt
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Tonight, just one line.
A note first: the app's interface is entirely in Korean. There is no English UI. If you read Korean comfortably — or you're learning and want the immersion — it works as-is. I'd rather you know before installing.
How many journals have you started and left behind?
Nakseojangssi is a diary app built around one line a day. Too long to write, too imperfect to post, so you put it off — this app starts from the smallest habit instead.
■ One line a day
One sentence is enough. You can attach a photo if you want. On days when nothing comes to mind, a prompt is waiting: 66 sentence prompts and 60 words run on separate cycles, so a given pairing takes nearly two years to come back. You can ignore both and write freely. If you'd like, a quiet reminder arrives each night at a time you choose. You can change it in settings.
■ 쉼표, the comma that keeps you going
Write daily and your streak builds. Every seven days you earn a 쉼표 (comma), and you can hold up to two. Miss a day and a comma covers it for you. And if a streak does break, every entry you wrote stays exactly where it is — nothing is deleted, and nothing counts down to a next goal.
■ Your time, gathered on a calendar
The days you wrote are joined by a gold thread across the calendar. Look back after a month and the single lines have quietly become a story.
■ Your writing stays on your phone
No account, no sign-up, no server of mine. Everything is stored on your device. An optional Google Drive backup lets you move your entries and photos to a new phone.
The app is free. One ad appears after your first save of the day, and none at all for your first three days. Every few days it offers a rewarded video instead, which you can watch to earn a comma or simply skip.
■ Premium (optional)
· All 3 ways in one day — Freeform, Sentence, Word
· 3 photos per entry
· No ad after you save
· Your own topics
A one-time purchase. The free way you've been writing stays exactly as it is.
Tonight, just one line.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
I wanted it to be easy to see where your writing is kept.
The backup row in Settings now shows the date of your last backup.
If it has been a while, a quiet line on the home screen says so.
When a backup doesn't go through, it tells you why and what you can do now.
In the calendar's topic view, freeform entries are now listed newest first.
The developer, WonHyeong Chang, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- WonHyeong Chang
- Size
- 77.8 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Premium - All 3 Ways in one day $9.99
- Copyright
- © 2026 WonHyeong Chang