Comparison

ePub Reader vs Underline

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

Head to head
About

ePub Reader

Read eBooks and documents in various formats like EPUB, PDF, and DOC. Import files easily, customize your reading experience with themes and fonts, and manage bookmarks and notes. Unlock more features with a PRO subscription.

Highlights
  • Supports EPUB, PDF, TXT, DOC, DOCX, ODT
  • Import via Browser, AirDrop, iCloud, Finder
  • Chapter browsing and bookmarking
  • Font customization and themes
  • Brightness control
  • Note-taking functionality
Read full description

Our app is a versatile mobile app designed for downloading and reading eBooks and documents with ease. It supports a wide range of formats including EPUB, PDF, TXT, DOC, DOCX, and ODT, as well as ZIP and RAR archives for direct extraction and reading. Users can import files through Browser, AirDrop, iCloud, Finder, and other apps, making access seamless across devices. The app offers intuitive navigation with chapter browsing, font customization, themes, brightness control, bookmarks, and notes. Free users can enjoy up to five books and notes, basic formats, and a light theme with two font options. The PRO version unlocks unlimited books and notes, advanced format support, widget integration, and enhanced reading personalization. Whether you're a casual reader or a digital library enthusiast, Our app makes your reading experience smooth and customizable. This application contains auto-renewable subscriptions and In-App Purchases: 1 week - Weekly - 4.99USD, 1 month - Monthly - 12.99USD, 1 year - Yearly - 39.99USD, Lifetime - 59.99USD Terms of Use Link: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Link: https://docs.google.com/document/d/1isnXJ8UzpPB0u-30XGbGvNo0p6PZgMpu53MvCF6O5b0/edit?tab=t.0

About

Underline

Features
Read full description

You underline a line in a book. You copy it into a notebook. Then the notebook stays at home, exactly when you want to find that passage again. Underline is your personal quote notebook for the printed books you read. Save the lines you underline, keep them organized by book and page, and find any of them in seconds, wherever you are. SAVE A PASSAGE IN SECONDS • Point your camera at the page. Text is recognized right on your device • Tap to select just the sentences you want, then save • Prefer typing? Add any quote manually • Add the page number, a personal note and tags BUILD YOUR BOOKSHELF • Add books by scanning the ISBN barcode or searching by title or author • Every quote is kept with its book, author and page • Mark favorites to keep your most loved lines one tap away FIND ANY LINE, ANYWHERE • Full-text search across every quote and note • Filter by book, tag or favorites • Your reading notes travel with you, no paper notebook required SHARE THE WORDS YOU LOVE • Turn a quote into a clean, beautiful card • Share it to Instagram Stories, messages or anywhere else YOUR DATA, YOUR FILES • Back up your whole library to a single .underline file and restore it anytime • Export to CSV or Markdown, ready for Notion, Obsidian or a spreadsheet PRIVATE BY DESIGN • No account, no sign-up • Your quotes are stored on your device, not on our servers • Works offline. The internet is only used when you look up a book Text recognition works with Latin-alphabet languages (English, Spanish, French, German, Italian, Portuguese, Turkish and more), plus Russian, Arabic and Japanese. Handwriting is not supported. UNDERLINE PRO (OPTIONAL) • No ads • Every quote card style, PDF export of a book's quotes and full reading insights • Monthly or yearly subscription (the yearly plan starts with a free trial), or a one-time lifetime purchase • Your books and quotes stay free and unlimited without Pro Underline is free to download. Start your quote journal with the book on your nightstand. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel them in your App Store account settings. Terms of Use: https://zaustudios.web.app/apps/underline/terms Privacy Policy: https://zaustudios.web.app/apps/underline/privacy

Screenshots

ePub Reader4 screens
Underline4 screens

Verdict

The call

The clearest difference is ads: ePub Reader at none against Underline's shown. ePub Reader also leads on iOS requirement (13.0 vs 15.5). On price, update cadence, in-app purchases 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. ePub Reader sells 5 in-app purchases, starting at $4.99 per 7 days and Underline sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ePub Reader ships an update every 2 weeks, Underline every 10 days. The most recent releases landed on November 8, 2026 and November 6, 2026 respectively.

Scorecard2 real differences · 8 level
ePub Reader versus Underline: the parameters behind the verdict, then further details
ParameterePub ReaderUnderline
PriceFreeFree
Rating3.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 2 weeksEvery 10 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.5
Further details — not scored
Size77 MB49 MB
Age rating4+4+
DeveloperTEXAS ADVANCE LLCZeynal Abidin UNLU

In-app purchases

5 purchases

ePub Reader

Subscriptions4
  • Weekly$4.997 Days
  • Weekly-Trial3 Days trial$4.997 Days
  • Monthly$12.991 Month
Show 1 more
  • Yearly$39.991 Year
One-time1
  • Lifetime$59.99
3 purchases

Underline

Subscriptions2
  • Underline Pro Monthly$4.991 Month
  • Underline Pro Yearly7 Days trial$19.991 Year
One-time1
  • Underline Pro Lifetime$39.99

Questions

Is ePub Reader free?
ePub Reader is free to download, with in-app purchases available.
Is Underline free?
Underline is free to download, with in-app purchases available.
Do ePub Reader or Underline have ads?
Underline shows ads; ePub Reader does not.
Which is updated more often, ePub Reader or Underline?
ePub Reader ships an update every 2 weeks, and Underline every 10 days. Most recently, ePub Reader was updated on November 8, 2026 and Underline on November 6, 2026.

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