Comparison

EPUB Viewer Pro vs ReadFlow

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

Head to head
About

EPUB Viewer Pro

Easily read EPUB files with this specialized application. It offers a convenient, fast, and safe reading experience for your digital books. A Mac version is also available for enhanced functionality.

Highlights
  • Read EPUB files
  • Convenient reading
  • Fast performance
  • Safe usage
  • Mac version available
Features
Read full description

EPUB Viewer Pro is a specialized app which aims at open epub file. You can use it to read epub files conveniently, fast and safely. ● We have also developed a Mac version, which is more convenient to use and has more functions. Welcome to download it from the Mac App Store. ● Contact us If you have any questions, please feel free to contact us by email. Email address : tzq17888@163.com.

About

ReadFlow

This app transforms PDF documents into a comfortable reading experience on small screens. It offers text reflow, customization options for fonts and themes, and iCloud sync for seamless access across devices. Enjoy reading PDFs as easily as other ebook formats.

Highlights
  • PDF text reflow for mobile
  • Customizable fonts and themes
  • Import custom font files
  • iCloud sync
  • PDF file cropping
  • Metadata editing
  • Generate and share reflowed text
Features
Read full description

Designed for mobile reading! Readflow is a reading app specially designed for small screens. The text reflow feature is elaborately designed to solve the problem that PDF documents are difficult to read on mobile devices, such as text that is too small and the scan is not clear, and obtain a reading experience consistent with EPub, txt and other formats. Key features include: - PDF text reflow, supporting multiple languages¹ - Custom font family, font size, line height, etc - Importing font files² - Reading themes, switching automatically - iCloud sync, supporting on-demand download to save storage space and cellular data - PDF file cropping - PDF file metadata editing and saving - Reflow text generating and sharing for a whole PDF file³ - More detailed features: favorites, searching, etc. - Purchase once, use everywhere⁴ --- ¹ Currently supported: English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Spanish, Simplified Chinese, Traditional Chinese, Ukrainian ² Supported file formats: otf, ttf ³ txt format ⁴ iOS / iPadOS universal app Term of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy policy: https://is.gd/TgnFzI

Screenshots

EPUB Viewer Pro2 screens
ReadFlow4 screens

Verdict

The call

The clearest difference is rating: ReadFlow at 4.8 against EPUB Viewer Pro's 3.5. ReadFlow also leads on update cadence (every 4 days vs every 5 months) and review sentiment (100% vs 84%). EPUB Viewer Pro's advantage is in-app purchases (none vs 3) and device support (4 vs 2). On price, ratings volume and ads 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. ReadFlow sells 3 in-app purchases, starting at $0.99 per month. EPUB Viewer Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ReadFlow holds the better App Store score, 4.8 against 3.5. Both are backed by a comparable volume of ratings — 13 and 5 respectively. Written reviews point the same way: 84% of EPUB Viewer Pro's written reviews are positive against 100% of ReadFlow's.

UpkeepUpdate frequency

EPUB Viewer Pro ships an update every 5 months, ReadFlow every 4 days. The most recent releases landed on September 21, 2026 and September 19, 2026 respectively.

Scorecard7 real differences · 3 level
EPUB Viewer Pro versus ReadFlow: the parameters behind the verdict, then further details
ParameterEPUB Viewer ProReadFlow
PriceFreeFree
Rating3.5 (13 ratings)4.8 (5 ratings) — better
Positive reviews84.1% of reviews100.0% of reviews — better
Number of ratings13 — better5
Update frequencyEvery 5 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS13.0 — better16.0
Further details — not scored
Size3 MB3 MB
Age rating4+4+
Developer青青 余实 许

Customer experience

EPUB Viewer Pro

All ratings13 ratings
Positive61.5%
Neutral0.0%
Negative38.5%
Written reviews88 reviews
Positive84.1%
Neutral4.5%
Negative11.4%

ReadFlow

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

EPUB Viewer Pro

No in-app purchases

3 purchases

ReadFlow

Subscriptions2
  • ReadFlow Pro 1x$0.991 Month
  • ReadFlow Pro 12x$9.991 Year
One-time1
  • ReadFlow Pro ∞$19.99

Questions

Is EPUB Viewer Pro free?
EPUB Viewer Pro is free to download, with no in-app purchases.
Is ReadFlow free?
ReadFlow is free to download, with in-app purchases available.
Which has better reviews, EPUB Viewer Pro or ReadFlow?
ReadFlow is rated higher. EPUB Viewer Pro averages 3.5 out of 5 from 13 ratings, while ReadFlow averages 4.8 from 5 ratings.
Do EPUB Viewer Pro or ReadFlow have ads?
Neither EPUB Viewer Pro nor ReadFlow shows ads.
Which is updated more often, EPUB Viewer Pro or ReadFlow?
EPUB Viewer Pro ships an update every 5 months, and ReadFlow every 4 days. Most recently, EPUB Viewer Pro was updated on September 21, 2026 and ReadFlow on September 19, 2026.

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