Comparison

Penguin vs ComicShelf Reader

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Penguin

This app is a comic and novel reader that supports various file formats and local network connections. It offers on-device translation for manga and novels, customizable reading settings, and library management features. Your reading progress syncs across devices via iCloud.

Highlights
  • Supports CBZ, CBR, PDF, EPUB, TXT, MD formats
  • On-device translation for manga and novels
  • Offline viewing
  • Library management with folders and iCloud sync
  • Customizable reading settings
  • Connects to NAS and servers (SMB, WebDAV, OPDS)
  • Reading statistics and streaks
Features
Read full description

A comic reader for the books you already own. CBZ, CBR, PDF and EPUB open straight from Files, your Mac, or your NAS — no unpacking, no account, no ads, and no internet needed once a book is on the device. Japanese pages you cannot read? Penguin Viewer translates the speech bubbles on your device and paints the English back into the balloon. ■ Untranslated novels in your language - Tap 文 at the top of a TXT or EPUB novel to read it translated. Tap again for the original. - The book's language is detected, and it translates to your device language or one you pick. - See the original under each paragraph, or long-press a paragraph for it. - Translated on the device. Your book is never sent anywhere. - Page curl turns pages like paper, with two-page spreads on wide iPad, iPhone Duo and Mac screens. - Vertical Japanese EPUBs turn page by page. ■ Manga and novels in one library - Drop in CBZ, CBR, CB7 (7z), ZIP, RAR, PDF or an image folder. TXT, MD and EPUB novels share the shelf. - Auto margin cropping makes your own scans fill the screen. ■ A library in your own folders - Nest Finder-style folders at any depth and drag books between them. - Import dozens at once into the open folder. Move or delete in bulk, or drag books into any order. - Folders and book order sync over iCloud without uploading files or using iCloud storage. ■ Translation that ends on the device - Manga and webtoon bubbles are translated sentence by sentence and relettered in place, vertical Japanese included. - In novels, tap 文 to read the book translated, or look up words. - Translate a whole comic in advance and pages turn with no wait. Nothing is sent anywhere. ■ Read novels your way - Font, size, line spacing, margins and background change in Text and Layout, live. - Jump chapters from the contents. Position and bookmarks carry between devices. ■ Your NAS and server library - Connect over SMB (NAS), WebDAV or OPDS, compatible with Komga and Kavita. - OPDS-PSE streams from your page with no download, so huge libraries take no storage. - Reading position syncs over iCloud. Server credentials stay in the keychain. ■ Read it the way you want - Single Page, Two-Page, or Smart Two-Page by screen ratio, plus right-to-left binding. - Webtoons scroll vertically or auto-scroll at 120Hz. Pan sideways while zoomed in. - Multi-gigabyte volumes turn smoothly. Pinch zoom works in spreads too. - A scheduled night theme blacks out the reader. Mac turns pages from the keyboard. ■ A library that sorts itself - Smart shelves file books as unread, reading or finished, and ComicInfo groups a scattered series. - Set grid columns and cover size, sort by recently opened, search by title, author or series. ■ A record that grows as you read - Reading statistics, streaks and milestones build the habit. - The reading calendar shows how much you read, iOS widgets show today's, and Face ID locks the app, hiding books from widgets and search. ■ Local AI Translation Benchmark - Measure how fast your device translates a manga page and get a PVScore. - Save and share the score card, and join the global top 500 leaderboard. ■ Honest pricing - Almost everything is free. The free library holds 30 books, plus 10 for sharing the app. - The benchmark and leaderboard are free, with unlimited runs. - Unlimited library: one lifetime Pro purchase, no subscription. No ads anywhere. ■ Privacy by default - Local first: files, translation, statistics and benchmark results stay on the device. - Leaderboard posts send nickname, score, run log and device info (model, chip, RAM, OS), all shown first. - Linking MyAnimeList sends it your title searches and volumes read. - No account, no sign-up, not a single tracking SDK. - Export your library and reading history, and restore it on a new device. ■ Good to know - Penguin Viewer supplies no manga or novels. It reads files you own. - The interface comes in 17 languages. Requests left in reviews get built quickly. Novel reading came out of one.

About

ComicShelf Reader

Organize and read your digital comic collection with support for multiple formats like CBZ, CBR, PDF, and EPUB. Enjoy various library and reading views, including panel-by-panel zoom and cloud storage integration. Designed for a seamless reading experience on iPhone and iPad.

Highlights
  • Supports CBZ, CBR, PDF, EPUB formats
  • Carousel, Shelf, and Grid library views
  • Paginated, Panel, and Scroll reading modes
  • Right-to-left reading for manga
  • Cloud storage integration (Google Drive, iCloud, WebDAV)
  • Handcrafted dark UI with optional red theme
Features
Read full description

ComicShelf Reader is the ultimate comic reading experience for iPhone and iPad. Whether you're a lifelong collector or just getting started, ComicShelf Reader puts your entire library at your fingertips — beautifully organized and a joy to read. READ EVERY FORMAT CBZ, CBR, PDF, and EPUB — ComicShelf Reader handles them all. No conversions, no workarounds. Just open and read. THREE STUNNING LIBRARY VIEWS • Carousel — Flip through your collection like a physical longbox with a stunning 3D carousel and reflective display • Shelf View — See your comics organized by series on a classic bookshelf • Grid View — A clean, dense layout for collectors with large libraries THREE READING MODES • Paginated — Tap or swipe page by page, just like holding a real comic • Panel View — Zoom in panel by panel for the ultimate reading experience on any screen size • Scroll View — Continuous vertical scrolling, perfect for webtoons and manga MANGA SUPPORT Full right-to-left reading mode for manga fans. ComicShelf Reader adapts to the way you read. YOUR LIBRARY, YOUR WAY Connect your existing cloud storage and read directly from your collection — no re-uploading required. • Google Drive • iCloud Drive • WebDAV servers BEAUTIFUL BY DESIGN ComicShelf Reader features a handcrafted dark UI with an optional Bloodied red theme — built for late-night reading sessions. Every detail, from the animated carousel to the per-panel zoom, is designed to keep you in the story. PRIVACY FIRST ComicShelf Reader does not collect, sell, or share your personal data. Your library stays yours. Support: support@comicshelf.app Privacy Policy: https://comicshelf.app/reader/privacy

Screenshots

Penguin4 screens
ComicShelf Reader4 screens

Verdict

The call

The clearest difference is rating: Penguin at 4.5 against ComicShelf Reader's 3.0. ComicShelf Reader's advantage is in-app purchases (none vs 1). On price, ratings volume, ads and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Penguin sells 1 one-off in-app purchase. ComicShelf Reader asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Penguin holds the better App Store score, 4.5 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

Scorecard2 real differences · 8 level
Penguin versus ComicShelf Reader: the parameters behind the verdict, then further details
ParameterPenguinComicShelf Reader
PriceFreeFree
Rating4.5 (2 ratings) — better3.0 (2 ratings)
Positive reviews100.0% of reviews—
Number of ratings22
Update frequencyEvery 5 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS18.017.0 — better
Further details — not scored
Size131 MB4 MB
Age rating4+4+
DeveloperHAEDUN KIMThomas Eggenberger

Customer experience

Penguin

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews13 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

ComicShelf Reader

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Penguin

One-time1
  • Pro Lifetime — Buy Once$6.99
None

ComicShelf Reader

No in-app purchases

Questions

Is Penguin free?
Penguin is free to download, with in-app purchases available.
Is ComicShelf Reader free?
ComicShelf Reader is free to download, with no in-app purchases.
Which has better reviews, Penguin or ComicShelf Reader?
Penguin is rated higher. Penguin averages 4.5 out of 5 from 2 ratings, while ComicShelf Reader averages 3.0 from 2 ratings.
Do Penguin or ComicShelf Reader have ads?
Neither Penguin nor ComicShelf Reader shows ads.

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