折角 - 电子书阅读与PDF批注 Downloads & Revenue折角 - 电子书阅读与PDF批注 · App Store
12 days old
折角 - 电子书阅读与PDF批注 is #142 in Books Paid in China and charting in 1 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
Developer国星 李
CategoryBooks
Price38.00 CNY
Released
Rating★ 5.0 (3)
Version1.0
Age rating4+
First seen by us
29 Oct 2026
29 Oct 2026Full timeline · 3 events
- 🆕折角 - 电子书阅读与PDF批注 first spotted by AppInsider#9 in Top Paid · Books · China
- 📦折角 - 电子书阅读与PDF批注 version 1.0No release notes
- 🆕折角 - 电子书阅读与PDF批注 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
5.0 ★
3 ratings
Measured
Best rank now
#142
Books PaidMeasured
New ratings a week
1.9
App Store, 4-week average
Measured
折角 - 电子书阅读与PDF批注 on the App Store
App details
App ID
6821235298
Publisher
国星 李
On the store since
Oct 2026
Under a year
Minimum OS
iOS 17.0+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
14
AR EN FR DE HI ID IT JA KO PT RU ZH …
Size
5 MB
Also listed in
Books, Productivity
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| China | BooksPaid | #142 |
Apps near 折角 - 电子书阅读与PDF批注 on the chart
Books Paid, around #142.
Ratings
App Store, worldwide.
Rating
5.0 ★
3 ratings
Measured
Ratings
3
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
1.9
4-week average
Lifetime rating
5.0★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
64/100
faster than 74% 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 折角 - 电子书阅读与PDF批注
Fold down the page worth coming back to.
Linger is a local ebook reader and PDF annotation app for iPad and iPhone. Bring your own books, textbooks and documents, settle into a quiet reading space, and leave a few marks where it matters.
READ PDFS LIKE A BOOK
Turn PDF pages with a page-curl animation or switch to continuous scrolling. In landscape, open a two-page spread like a book lying open. Page thumbnails, page bookmarks and text search take you back to the pages you want to see again.
PICK UP YOUR PENCIL
On a compatible iPad, write directly on PDF pages with Apple Pencil — no mode to switch first. Choose a pen, marker or eraser, adjust colors and stroke widths, and select and move your handwriting as your ideas take shape.
TAKE YOUR NOTES WITH YOU
Export a PDF with your handwriting and marks included, ready to save or share.
BRING YOUR OWN LIBRARY
Import PDF, EPUB, TXT and supported MOBI files from Files. Organize books into collections, arrange them in your preferred order and pick up where you left off from your recent reading.
MAKE TEXT YOUR OWN
Adjust the font, text size and line spacing in EPUB, TXT and supported MOBI books. Choose a white, warm or dark theme. Your reading position is saved on the current device.
Available on iPad and iPhone, with an interface in 14 languages.
FEATURE NOTES
• Page-curl animations, two-page layouts, handwriting, page bookmarks and annotated PDF export are PDF features.
• PDF text search requires an existing text layer. OCR is not included.
• Apple Pencil features require a compatible iPad and Apple Pencil.
• Selected DRM-free MOBI files are supported. Pure KF8/AZW3 and DRM-protected books are not supported.
• Your library and reading progress are stored on the current device. Automatic cross-device syncing is not included.
Linger is a local ebook reader and PDF annotation app for iPad and iPhone. Bring your own books, textbooks and documents, settle into a quiet reading space, and leave a few marks where it matters.
READ PDFS LIKE A BOOK
Turn PDF pages with a page-curl animation or switch to continuous scrolling. In landscape, open a two-page spread like a book lying open. Page thumbnails, page bookmarks and text search take you back to the pages you want to see again.
PICK UP YOUR PENCIL
On a compatible iPad, write directly on PDF pages with Apple Pencil — no mode to switch first. Choose a pen, marker or eraser, adjust colors and stroke widths, and select and move your handwriting as your ideas take shape.
TAKE YOUR NOTES WITH YOU
Export a PDF with your handwriting and marks included, ready to save or share.
BRING YOUR OWN LIBRARY
Import PDF, EPUB, TXT and supported MOBI files from Files. Organize books into collections, arrange them in your preferred order and pick up where you left off from your recent reading.
MAKE TEXT YOUR OWN
Adjust the font, text size and line spacing in EPUB, TXT and supported MOBI books. Choose a white, warm or dark theme. Your reading position is saved on the current device.
Available on iPad and iPhone, with an interface in 14 languages.
FEATURE NOTES
• Page-curl animations, two-page layouts, handwriting, page bookmarks and annotated PDF export are PDF features.
• PDF text search requires an existing text layer. OCR is not included.
• Apple Pencil features require a compatible iPad and Apple Pencil.
• Selected DRM-free MOBI files are supported. Pure KF8/AZW3 and DRM-protected books are not supported.
• Your library and reading progress are stored on the current device. Automatic cross-device syncing is not included.
Latest updates
1.0