Comparison

Readest vs Mythos Reader

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

Head to head
About

Readest

This app is a powerful ebook reader designed for deep thinkers and researchers. It offers advanced annotation tools, seamless device syncing, and robust library management with OPDS and Calibre support. Enjoy a distraction-free reading experience with customizable modes and multi-book viewing for enhanced study and analysis.

Highlights
  • OPDS Online Libraries
  • Calibre Integration
  • Sync Across Devices
  • Bookshelf Management
  • Customizable Reading Modes
  • Multi-Book View
  • Advanced Annotations & Highlights
Features
Currently charting
Read full description

Readest is an ebook reader for people who read a lot, and who want their books, notes and reading position on whatever device is nearest. Open EPUB, PDF, MOBI, AZW3, FB2, CBZ, TXT and Markdown in one library. Pull books from OPDS catalogs or from your own Calibre server. Read, annotate, listen, translate. Made for iPhone and iPad • CarPlay, so you can keep listening on the road with playback controls on the dashboard • Download read-aloud voices per book and listen with no connection at all • Add books from Files, Mail or any share sheet, and read them in place instead of copying them into a second library • Open up to four books at once on iPad and arrange them how you like Reading • Paginated or scrolling, with custom fonts, themes, spacing and margins • Vertical text for CJK books • Contrast and refresh tuned for e-ink screens • Full-text search inside a book Your library • Browse, search and download from OPDS catalogs and public libraries • Connect to Calibre or Calibre-Web, covers and metadata included • Organize with bookshelf groups you can rename Notes • Highlights, bookmarks and structured notes • Copy a highlight together with a deep link back to the passage • Export your annotations Listening and languages • Text-to-speech with downloadable offline voices • Translate a sentence, a page, or an entire book • Wikipedia and dictionary lookup without leaving the page Sync • Readest Cloud, or bring your own: iCloud, Google Drive, OneDrive, WebDAV, S3 • KOReader sync keeps your progress in step with your e-reader • iPhone, iPad, Mac, all other platforms and the web Readest is open source. Support: support@readest.com Privacy Policy: https://readest.com/privacy-policy Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Mythos Reader

This intelligent reader uses AI to transform books into interactive experiences. Highlight any text for instant summaries, explanations, or contextual insights, enhancing comprehension and engagement with your reading material. Supports EPUB and PDF formats for a personalized learning journey.

Highlights
  • AI-powered reading assistance
  • Contextual text explanations
  • Distraction-free interface
  • EPUB and PDF support
  • Personalized learning insights
Features
Read full description

When a passage makes you pause, ask Mythos Reader. Mythos Reader is an AI book reader for your EPUBs and PDFs. Select text, tap Explain, or ask a question without switching apps. FOLLOW YOUR CURIOSITY Start with a suggested question or write your own. Ask follow-ups to explore the passage and build on the conversation. From unfamiliar words to complex ideas, get help with the text in front of you. KEEP WHAT MATTERS Highlight a passage, add a note, or bookmark a page to come back to. Keep your thoughts alongside your reading. SETTLE INTO YOUR BOOK Adjust fonts, text size and margins in EPUBs. Choose a reading theme, including dark mode. Download your books to read offline. BRING YOUR OWN LIBRARY Import EPUBs and PDFs on iPhone and iPad. PDF explanations require selectable text. Mythos reads the files you bring; it does not include a book catalog. Download Mythos and start reading with understanding. --- Terms of Service: https://www.notion.so/Terms-of-Service-2b3ad7d0ef7f800fbdcded8060cb6d12

Screenshots

Readest4 screens
Mythos Reader4 screens

Verdict

The call

The clearest difference is rating: Readest at 4.5 against Mythos Reader's 4.2. Readest also leads on ratings volume (197 vs 6) and chart position (#184 vs unranked). On price, review sentiment, update cadence 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. Readest sells 9 in-app purchases, starting at $4.99 per month and Mythos Reader sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Readest holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: Readest has 197 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 84% of Readest's written reviews are positive against 86% of Mythos Reader's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Readest ships an update fortnightly, Mythos Reader every 2 weeks. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 8 level
Readest versus Mythos Reader: the parameters behind the verdict, then further details
ParameterReadestMythos Reader
PriceFreeFree
Rating4.5 (197 ratings) — better4.2 (6 ratings)
Positive reviews84.0% of reviews85.7% of reviews — better
Number of ratings197 — better6
Update frequencyFortnightly — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank#184 — better—
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS16.416.4
Further details — not scored
Size58 MB94 MB
Age rating4+4+
DeveloperBilingify LLCSami Ibrahim

Customer experience

Readest

All ratings191 ratings
Positive86.4%
Neutral5.2%
Negative8.4%
Written reviews288 reviews
Positive84.0%
Neutral5.6%
Negative10.4%

Mythos Reader

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews7 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

In-app purchases

9 purchases

Readest

Subscriptions4
  • Subscribe to Plus Plan$4.991 Month
  • Subscribe to Pro Plan$9.991 Month
  • Subscribe to Plus Plan$49.991 Year
Show 1 more
  • Subscribe to Pro Plan$99.991 Year
One-time5
  • 1 GB$9.99
  • 2 GB$14.99
  • Full Customization$19.99
Show 2 more
  • 5 GB$29.99
  • 10 GB$49.99
2 purchases

Mythos Reader

Subscriptions2
  • Mythos Premium$9.991 Month
  • Mythos Premium Annual14 Days trial$99.991 Year

Questions

Is Readest free?
Readest is free to download, with in-app purchases available.
Is Mythos Reader free?
Mythos Reader is free to download, with in-app purchases available.
Which has better reviews, Readest or Mythos Reader?
Readest is rated higher. Readest averages 4.5 out of 5 from 197 ratings, while Mythos Reader averages 4.2 from 6 ratings.
Do Readest or Mythos Reader have ads?
Neither Readest nor Mythos Reader shows ads.
Which is updated more often, Readest or Mythos Reader?
Readest ships an update fortnightly, and Mythos Reader every 2 weeks. Most recently, Readest was updated on October 30, 2026 and Mythos Reader on October 25, 2026.

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