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70
BU Score
Strong

Manga Viewer - CBZ(CBR) Reader

4.8 ✍️ Editor
✍️ BU Analytics Review

Manga Viewer - CBZ(CBR) Reader is an iOS app from kim juyoung in the Food & Drink category, currently rated 4.8★ across 335 ratings. Initial signal reads as mixed reviews — supporters praise core features while critics cite stability/value gaps.

Our BU Score puts it at 70Strong (healthy traction). For a Food & Drink app, that means healthy traction.

Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.

creator

📊 Performance Tracking LIVE

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Rating
Reviews
Forecast Revenue / mo
Snapshots tracked
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💰 Forecast Revenue / mo

MODEL
Revenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 7 of 7 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
Excellent rating (4.8★)METRIC
+$2,200
5 starREVIEW
+$1,800
excellent appREVIEW
+$1,500
Mature app (8y old)METRIC
+$1,500
highly recommendREVIEW
+$1,400
Ad-supported / freemiumMETRIC
+$600
Early-stage install base (335 ratings)METRIC
+$400
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📈 Reviews Growth

LIVE
Cumulative review count from first BU snapshot. Each point = a tracked update.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
Sep 24
Oct 24
Jan 25
Mar 25
Nov 25

⭐ Rating Trend

LIVE
Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY
Each bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →
💾 76 MB🔞 4+📱 iOS 14.0+🔖 v1.368🔄 updated 1w ago🌐 EN, JA, KO📂 Food & Drink💰 Paid🚀 Launched 2017 (8y old)

📝 About this app

The simplest viewer app for viewing comic, fictional image archives

Such as a cartoon or a novel, on a smartphone
You can see it anywhere.

Now that you've installed the app
Try transferring files on your PC with WiFi

* Some functions may not be supported on Mac(Apple Silicon)

** Characteristic **
- zip, rar, 7z, cbz, cbr, cb7 compressed files are supported (png, jpeg, jpg, gif, bmp, tif, tiff extension images are included, webp format is supported from iOS14)
- PDF file support
- TIF/TIFF file support (like PDF file, change in settings)
- Upload via PC web browser (WIFI)
- Import files from cloud apps such as iCloud, dropbox, circle drive, and Box
- FTP support: browse, download
- SSHFTP support
- Secure FTP not supported
- Cloud apps support file copy from mail attachments
- one page view, two page view
- Sharpen image filter
- IPhone, iPad, Mac(Apple Silicon) support
- Rotate the screen both horizontally and vertically
- Image next page Zoom-in keep-alive function: Apply the previous book's zoom-in status in the following book. Please change your settings.
- Screen off option: When set to ON, the screen automatically turns off at the time the device turns off.
- Last file view, On / Off in setting
- Next book auto-switching options: If you automatically change the next book switching option in Settings, tabs on the last page will automatically switch to the next book. (Default manual)
- iCloud Sync : Synchronize the information (read location) of the read file and open the same file on another device (signed in with the same iCloud account) so that you can see it again.
- Two pages in landscape mode: Two pages in landscape rotation, one page in vertical rotation, iPad only
-Vertical scroll mode (= webtoon mode): scrolls vertically like webtoons, one-page mode is fixed, and some options are fixed and not applied.


- Image / PDF Night mode: Invert color / Image brightness (1 to 3 steps), in-app purchase required
- Night Mode - Invert Color: Invert the white background to black (gray) and black to white. This mode is suitable for viewing novels.
- Night Mode - Image Brightness: You can change the brightness of the image in three steps without changing the screen brightness of the device.

- Bluetooth keyboard: Supports page switching and screen closing function, direction key (asdw) page switch, ESC key viewer screen close (in-app purchase required)
- A function that changes to the next page when the volume is changed. (The sound size will change as well. Please be careful. ON / OFF in setting. Need an in-app purchase or reward view.)

- Blink: Recognizes eye blinks to switch pages (iPhone only, iOS 18+, in-app purchase required)
- Automatic Image Crop: Automatically crops the empty space on all four sides of images with a white background. (iOS 16+, in-app purchase required)
- Content Color: You can change and unify the content (pictures or text) within the image to a single color. A background color is applied to the image background excluding the content (In-app purchase required)
- Select text: Long-click to select text within a page and copy, search, translate, or share (iOS 18+, in-app purchase required)


Please send bugs or suggestions to junhuloveapple@gmail.com at the top right of the setting screen.

🆕 What's New · v1.368

- Fixed an issue where the app crashed when attempting to extract a rar file placed in the app via the Apple device app.

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name
Manga Viewer - CBZ(CBR) Reader
Developer
kim juyoung
Bundle ID
com.junhulove.ComicViewer
App Store URL
Open in App Store
Category
Food & Drink
Content rating
4+
Languages
EN, JA, KO

Company

Website
komisoftapps.blogspot.com
Tagline
KomiSoft Apps Blog
Description
텍스트, 만화, 뷰어, Viewer, Text, Manga, Reader, txt, 이북, 웹툰, 워치 리더, 애플 워치, 아이폰, 아이패드
Founded
Not found
HQ / Address
Not found
Employees
Not found
Logo
Not found

Revenue

Verified revenue / mo
Not found
AI revenue estimate / mo
Not found
AI annual estimate
Not found
ML model estimate / mo
$27.1K/mo
Top-grossing rank
Outside top 100 in US Food & Drink
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
Not found
LinkedIn
Not found
GitHub
Not found
X followers
Not found
Public statements
Not found

Funding

Total raised
Not found
Last round
Not found
Investors
Not found
Crunchbase
Not found
AngelList
Not found

Press & Links

Articles found
Not found
Listed on
Not found
Blog
Not found
Press / News
Not found

Contacts & Socials

Socials
Not found
Email
junhuloveapple@gmail.com
Phone
Not found
Contact page
Not found
About page
Not found
📈Ratings growth335 ratings+33400% lifetimeShow 3-year history estimate ▾Dec 2018Mar 2024May 2026
Tracked (32 weeks) Pre-tracking estimate (37 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
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