The Seojae Downloads & RevenueThe Seojae: Reading Tracker · App Store
더 서재 - 취향으로 잇는 독서 기록
The Seojae: Reading Tracker is #185 in Books Free in South Korea and charting in 1 of 30 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
Developerthe Seojae
CategoryBooks
PriceFree
Released
Rating★ 4.5 (13)
Version1.11.15
Age rating12+
First seen by us
9 Oct 2026
9 Oct 2026Installs (est.)500+ worldwide
The Seojae: Reading Tracker update history & changes
Last change · 13 events since 29 May 2026Full timeline ↓📦Updated to version 1.11.15✏️New screenshots📦Updated to version 1.11.11✏️New screenshots🆕First spotted by AppInsider🆕Released on the App Store
Full timeline · 13 events
- 📦The Seojae: Reading Tracker updated to version 1.11.15◆ Reading run cheers: Chaekchaek cheers you on at 10 min, 30 min, 1 hour and more, and the timer changes color as you read.
◆ Set a photo for your group chat.
◆ Long-press a book card in chat to add it to your library.
◆ Notifications you've replied to now show "Replied".
◆ Book stories with comments now open expanded.
◆ Tap a profile in one-line comments to visit their library.
◆ Snap a book page to save a quote during a reading run.
◆ Fixed the app closing when you tap the reading run card on the Lock Screen.… more - ✏️The Seojae: Reading Tracker: new screenshots8 screenshots (was 8) · KR
- ✏️The Seojae: Reading Tracker added 1 language+ JA
- ✏️The Seojae: Reading Tracker: app got bigger53 MB → 60 MB (+14%)
- 📦The Seojae: Reading Tracker updated to version 1.11.11· Now available in Japanese. Change the language in Settings.
· The Seojae now works on iPad.
· Book Talk gets 150+ new emoticons sorted by mood, with your favorites up front.
· Start a Book Talk with readers of the same book right from the book page.
· Clear a misread Book Story sentence in one tap.
· Plus smaller design and speed improvements.… more - 📦The Seojae: Reading Tracker: now updating weekly4 updates in 30 days, after a quiet two months
- ✏️The Seojae: Reading Tracker: new screenshots8 screenshots (was 9) · KR
- 📦The Seojae: Reading Tracker updated to version 1.11.9더서재를 이제 영어로도 쓸 수 있어요.
설정 > 언어에서 한국어와 English를 고를 수 있어요.
· Siri와 단축어로 북런을 시작하고 멈출 수 있어요
"더서재에서 북런 시작"이라고 말해 보세요
· 재독한 책에 재독·삼독 표시가 붙어요
· 오늘 보낸 응원은 다시 들어와도 엄지가 채워져 있어요
· 답장 알림에서 어떤 책에 보낸 응원인지 보여요
· 완독 달력에서 표지를 끌어 완독일을 바꿀 수 있어요
· 사진으로 문장을 담을 때 줄바꿈이 깔끔해졌어요… more - ✏️The Seojae: Reading Tracker added 1 language+ EN
- 📦The Seojae: Reading Tracker updated to version 1.11.8영문 설정기능을 추가했습니다.
- 🆕The Seojae: Reading Tracker first spotted by AppInsider#66 in Top Free · Books · South Korea
- 📦The Seojae: Reading Tracker version 1.11.6아이폰18 에서 앱이 자동으로 종료 현상이 있어 수정했습니다.
- 🆕The Seojae: Reading Tracker released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.5 ★
13 ratings
Measured
Best rank now
#185
Books FreeMeasured
The Seojae: Reading Tracker on the App Store
App details
App ID
6770218449
Publisher
the Seojae
On the store since
May 2026
Under a year
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
12+
Languages
3
EN JA KO
Size
64 MB
Also listed in
Books, Social Networking
The Seojae: Reading Tracker downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where The Seojae: Reading Tracker's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| South Korea | BooksFree | #185 |
Apps near The Seojae: Reading Tracker on the chart
Books Free, around #185.
Ratings
App Store, worldwide.
Rating
4.5 ★
13 ratings
Measured
Ratings
13
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
4.2★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
58/100
faster than 64% of Books apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
About The Seojae: Reading Tracker
Keep every book you've read — and the ones you didn't finish.
Track your reading time and meet readers who share your taste.
The app is currently in Korean. An English interface is coming soon.
■ Five ways to shelve a book
Want to read / Reading / Finished / Paused / Dropped
Books you didn't finish count too. What you drop is part of your taste.
■ Book Run: watch your reading time add up
Start the timer and your time to finish is saved as you go.
· Daily goals and reading streaks
· Minutes per page and how much is left
· When you read most, and which books held you longest
· Interval alarms while you read
· Send cheers to people reading right now
■ Book Story: one line at a time
Save a line that stayed with you and it becomes a card with the cover.
Swipe through, like, and reply.
■ Book Feed
Who finished what, and which lines they lingered on.
A feed of books and sentences, not numbers.
■ Readers who share your taste
People who stayed with the same book, or dropped similar ones.
A small library community connected by what you read.
■ What your records show
· Completion calendar filled with covers
· Reading stats by genre, rating and month
· Reading level that grows with consistency
· Pin your all-time favorites and share your whole library with one QR code
■ What people are reading now
Most-shelved books, this week's Top 10, trending titles,
finishers' picks, the brick-book club, and books you can finish on the
subway.
■ Today's book
One pick each day based on the weather, the season and your shelf.
Plus editor curations and reader-made collections.
■ Reading circles
Small groups reading the same book together.
A book you'd stall on alone is easier to finish together.
Track your reading time and meet readers who share your taste.
The app is currently in Korean. An English interface is coming soon.
■ Five ways to shelve a book
Want to read / Reading / Finished / Paused / Dropped
Books you didn't finish count too. What you drop is part of your taste.
■ Book Run: watch your reading time add up
Start the timer and your time to finish is saved as you go.
· Daily goals and reading streaks
· Minutes per page and how much is left
· When you read most, and which books held you longest
· Interval alarms while you read
· Send cheers to people reading right now
■ Book Story: one line at a time
Save a line that stayed with you and it becomes a card with the cover.
Swipe through, like, and reply.
■ Book Feed
Who finished what, and which lines they lingered on.
A feed of books and sentences, not numbers.
■ Readers who share your taste
People who stayed with the same book, or dropped similar ones.
A small library community connected by what you read.
■ What your records show
· Completion calendar filled with covers
· Reading stats by genre, rating and month
· Reading level that grows with consistency
· Pin your all-time favorites and share your whole library with one QR code
■ What people are reading now
Most-shelved books, this week's Top 10, trending titles,
finishers' picks, the brick-book club, and books you can finish on the
subway.
■ Today's book
One pick each day based on the weather, the season and your shelf.
Plus editor curations and reader-made collections.
■ Reading circles
Small groups reading the same book together.
A book you'd stall on alone is easier to finish together.
Latest updates
1.11.15
◆ Reading run cheers: Chaekchaek cheers you on at 10 min, 30 min, 1 hour and more, and the timer changes color as you read.
◆ Set a photo for your group chat.
◆ Long-press a book card in chat to add it to your library.
◆ Notifications you've replied to now show "Replied".
◆ Book stories with comments now open expanded.
◆ Tap a profile in one-line comments to visit their library.
◆ Snap a book page to save a quote during a reading run.
◆ Fixed the app closing when you tap the reading run card on the Lock Screen.
1.11.11
· Now available in Japanese. Change the language in Settings.
· The Seojae now works on iPad.
· Book Talk gets 150+ new emoticons sorted by mood, with your favorites up front.
· Start a Book Talk with readers of the same book right from the book page.
· Clear a misread Book Story sentence in one tap.
· Plus smaller design and speed improvements.
1.11.9
더서재를 이제 영어로도 쓸 수 있어요.
설정 > 언어에서 한국어와 English를 고를 수 있어요.
· Siri와 단축어로 북런을 시작하고 멈출 수 있어요
"더서재에서 북런 시작"이라고 말해 보세요
· 재독한 책에 재독·삼독 표시가 붙어요
· 오늘 보낸 응원은 다시 들어와도 엄지가 채워져 있어요
· 답장 알림에서 어떤 책에 보낸 응원인지 보여요
· 완독 달력에서 표지를 끌어 완독일을 바꿀 수 있어요
· 사진으로 문장을 담을 때 줄바꿈이 깔끔해졌어요
Store changes
What The Seojae: Reading Tracker changed on its store page: name, icon, screenshots, price, size, languages, requirements.
New screenshots
8 screenshots (was 8)
Added 1 language
+ JA
App got bigger
53 MB → 60 MB (+14%)