Comparison

Penguin vs ComicJet

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 allows you to read your existing comic books and novels offline. It supports various file formats and offers on-device translation for manga and text-based stories. Organize your library with smart shelves and sync progress across devices.

Highlights
  • Offline viewing of CBZ, CBR, PDF, EPUB
  • On-device translation for manga and novels
  • Library management with nested folders
  • iCloud sync for folders and reading position
  • Supports SMB, WebDAV, and OPDS connections
  • Customizable reading settings
  • Reading statistics and habit tracking
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

ComicJet

Features
Read full description

Read your comics at jet speed. ComicJet is a fast, clean reader for the comics, manga, webtoons, and scans you already own. Open CBZ, CBR, CB7, ZIP, RAR, 7Z, PDF, and TXT right on your iPhone and iPad — no account, no uploads, no waiting. Why ComicJet Opens instantly The first page shows immediately while the rest extracts in the background. Even huge files start at page 1 with no loading screen. Once opened, a book reopens instantly. All the major formats - CBZ / CBR / CB7 comic book archives - ZIP / RAR / 7Z archives full of images - PDF comics and scans - TXT text files (novels welcome, same viewer) Password files & private reading - Open password-protected ZIP / CBZ (incl. AES), RAR / CBR, and PDF - A working password is stored safely in the iOS Keychain and applied automatically next time - Optional app lock with Face ID or your device passcode A viewer built for reading - Pinch to zoom, smooth page turns - Webtoon mode — vertical strips are detected automatically and read with continuous scrolling, zoom included - Auto-split wide spread pages — left-first or right-first (for manga) - Smart split that detects the actual binding line - Two-page spread view in landscape - Auto-paging (2–10 s) and jump straight into the next book from the last page - Seek bar with thumbnail previews to find any scene fast - Remembers your last page in every book and offers to resume - Night mode for dark rooms - Automatic filename-encoding detection for Korean, Japanese, and Chinese archives (no more garbled names) A simple bookshelf - Grid or list library with cover thumbnails - Drop files into the "ComicJet" folder in the Files app and they appear automatically - Or use "Share → ComicJet" straight from the Files app - Your collection stays on your device, under your control Privacy first ComicJet only reads files stored on your device. Your comics are never uploaded anywhere and no account is needed. Analytics events never include file names, paths, accounts, or passwords. Privacy policy: https://qingdu.ai/comicjet/privacy Premium Prefer reading without ads? Remove them with a yearly subscription or a one-time lifetime purchase. Every reading feature stays free. A note ComicJet is a file viewer. It does not include or provide comic content. Please use it to read files you own or obtained legally. Questions or feature requests: qingdu.studio@gmail.com — we read everything. The comic shown in screenshots is Pepper&Carrot by David Revoy (CC-BY 4.0). Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Penguin4 screens
ComicJet4 screens

Verdict

The call

The clearest difference is in-app purchases: ComicJet at none against Penguin's 1. ComicJet also leads on iOS requirement (16.0 vs 18.0). On price, update cadence, ads and device support 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. ComicJet asks for nothing beyond the download.

UpkeepUpdate frequency

Penguin ships an update every 5 days, ComicJet every 3 days. The most recent releases landed on November 13, 2026 and November 6, 2026 respectively.

Scorecard2 real differences · 8 level
Penguin versus ComicJet: the parameters behind the verdict, then further details
ParameterPenguinComicJet
PriceFreeFree
Rating4.5 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 5 daysEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS18.016.0 — better
Further details — not scored
Size131 MB17 MB
Age rating4+4+
DeveloperHAEDUN KIMJungsoo Nam

In-app purchases

1 purchases

Penguin

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

ComicJet

No in-app purchases

Questions

Is Penguin free?
Penguin is free to download, with in-app purchases available.
Is ComicJet free?
ComicJet is free to download, with no in-app purchases.
Do Penguin or ComicJet have ads?
Neither Penguin nor ComicJet shows ads.
Which is updated more often, Penguin or ComicJet?
Penguin ships an update every 5 days, and ComicJet every 3 days. Most recently, Penguin was updated on November 13, 2026 and ComicJet on November 6, 2026.

Other comparisons