Comparison

CHMate vs Audi Scan

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

Head to head
About

CHMate

This app offers a robust reading experience for EPUB and CHM eBooks. Organize your library, add bookmarks and notes, and customize your reading environment. Share passages and easily search within your books.

Highlights
  • Organize eBooks into collections
  • Add bookmarks and notes
  • Customizable fonts and line height
  • Fast scrolling and pagination
  • Highlight favorite passages
  • Built-in search functionality
  • Share quotes with friends
Features
Read full description

Default ebook formatting does not always suit the way you read. CHMate turns your personal files into a calm, comfortable reading corner. A customizable wooden bookshelf with an ambient lamp and personal decor. Download free. Unlock multiple books with a single one-time purchase. A BOOKSHELF OF YOUR OWN • Wooden shelves and ambient lamp: Display your personal collection with warm bookshelf lighting. • Shelf decor: Arrange animated ornaments, plants, paintings, and shelf-edge figures. • Personal memories: Decorate with photos, Live Photos, or silent looping videos (MP4/MOV). • Custom layout: Freely move, resize, and favorite your decor items. TAILORED TYPOGRAPHY • Page colors: Choose from six page colors independently of your typography theme, with light, dark, or automatic appearance. • Precise reading controls: Adjust font size, line height, page margins, and fonts for body, headings, and code. • Custom font import: Read with built-in fonts or import your own font files. • Horizontal and vertical reading: Switch text orientation where supported for Chinese and Japanese text. • iCloud theme sync: Save your custom typography themes and sync them across your devices. TOOLS & LOCAL IMPORT • Supported formats: Read your own EPUB and CHM files with structured table of contents navigation. • Local Wi-Fi transfer: Send files directly from your computer browser over your local network. • Reading tools: Search full text across chapters, add highlights, and review notes in one place. HONEST PRICING • Free download with complete reading features for your current book. • Unlock multiple books with a single one-time in-app purchase. • No subscriptions and no ads.

About

Audi Scan

Features
Read full description

Connectez-vous à votre document Audi (support papier et/ou web) pour vous faire découvrir une expérience interactive et aller au-devant de nouvelles sensations.

Screenshots

CHMate4 screens
Audi Scan4 screens

Verdict

The call

The clearest difference is in-app purchases: Audi Scan at none against CHMate's 1. Audi Scan also leads on iOS requirement (12.0 vs 26.0). 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. CHMate sells 1 one-off in-app purchase. Audi Scan asks for nothing beyond the download.

UpkeepUpdate frequency

CHMate ships an update every 2 weeks, Audi Scan monthly. The most recent releases landed on October 21, 2026 and October 11, 2026 respectively.

Scorecard2 real differences · 8 level
CHMate versus Audi Scan: the parameters behind the verdict, then further details
ParameterCHMateAudi Scan
PriceFreeFree
Rating3.9 (20 ratings) — better—
Positive reviews55.3% of reviews—
Number of ratings20 — better—
Update frequencyEvery 2 weeks — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.012.0 — better
Further details — not scored
Size51 MB94 MB
Age rating4+4+
Developer贤安 陈Volkswagen Group France

Bugs and requests

CHMate

Reported bugs

13 issues
  • App crashes when searching CHM files
  • Crashes when using tap-hold for bookmarking
  • Highlighting functionality broken after iOS updates
  • Notes and bookmarks not saving properly
  • Highlights disappear or move between chapters
Show 8 more
  • App crashes on startup or when opening files
  • Table of contents index expansion broken
  • Custom fonts blocked after iOS 14.5 update
  • Files not accessible via iCloud or Dropbox
  • Missing icons after updates
  • Images display as half-dark or missing
  • Text formatting changes not visible without page reload
  • First line spacing issues

Requested features

12 requests
  • Dark mode and additional color themes (Sepia)
  • Book cover display instead of text-only library view
  • PDF support
  • Text-to-speech functionality
  • Better pagination options
Show 7 more
  • iPad Pro resolution support
  • iOS multi-window support
  • Better bookmark functionality
  • Separate highlighting and annotation tools
  • Support for Cyrillic and Arabic text encoding
  • Collection/folder organization for multiple files
  • Zip file support for documentation sets

Audi Scan

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

CHMate

One-time1
  • CHMate+$9.99
None

Audi Scan

No in-app purchases

Questions

Is CHMate free?
CHMate is free to download, with in-app purchases available.
Is Audi Scan free?
Audi Scan is free to download, with no in-app purchases.
Do CHMate or Audi Scan have ads?
Neither CHMate nor Audi Scan shows ads.
Which is updated more often, CHMate or Audi Scan?
CHMate ships an update every 2 weeks, and Audi Scan monthly. Most recently, CHMate was updated on October 21, 2026 and Audi Scan on October 11, 2026.

Other comparisons