Comparison

Readest vs Aya 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
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

Aya Reader

This app breaks down language barriers in reading by offering instant translations and natural-sounding text-to-speech narration. It supports multiple file formats and integrates seamlessly with your device for a focused reading experience.

Highlights
  • Cross-language translation
  • Text-to-speech narration
  • EPUB, PDF, TXT support
  • Background audio playback
  • System file integration
  • Adjustable speech rate
Features
Read full description

Aya Reader: A Cross-Language Swiss Army Knife for ReadersAya Reader: The Cross-Language "Swiss Army Knife" for Readers In an era of information equity, great ideas should not be constrained by language barriers. As e-readers become increasingly bloated and digital bookshelves grow more ornate, Aya Reader chooses to step back. We offer no flamboyant flourishes or crowded decorations. Aya is a pure "Swiss Army Knife" built for a singular purpose: removing the two biggest obstacles in reading—language boundaries and eye fatigue. 1. Global Original Works, Rendered in Your Native Tongue We believe translation should not be an interruption; it should be an extension of cognition. Bridge the Language Gap: No matter the source language, Aya Reader brings it into your native tongue with translation that is always within reach. Full-Chapter Semantic Flow: Leave fragmented word lookups behind. Our deep, full-chapter processing preserves paragraph logic and reading rhythm, allowing you to absorb global knowledge as fluently as a native text. 2. Natural, Life-like Narration (TTS) To liberate your eyes, we have refined the Text-to-Speech experience with obsessive care. Top-Tier Voice Engines: Integrated with EdgeTTS and native iOS voices, Aya provides a natural, "breathable" listening experience that remains stable and pleasant over long sessions. Viewport-Level Precision: A unique "Non-Auto-Flip" logic and a "Return to Current Position" button ensure your eyes always stay in perfect sync with the audio. True Background Playback: With deep support for Audio and AirPlay, your reading continues seamlessly during commutes or moments of rest, even with the screen off. 3. A Pure Tooling Foundation Universal Format Support: Gracefully handles EPUB, PDF, and TXT to cover your primary reading workflow. System-Level Integration: Forget heavy file shuffling. Aya respects your storage and instincts—simply tap a file in any app to launch it directly via the system "Open" action. The Beauty of Detail: From panel translucency to precise speech-rate increments and sleep timers, every UI adjustment exists to make the tool disappear and let the text emerge. Product Manifesto Aya Reader does not want to change how you read. It simply wants to smooth out the boundaries of language and stay with you through those hours of deep, uninterrupted focus. If you are tired of complex setups and redundant features—if you only want to finish a book with undivided attention or quietly listen through a translated chapter—then this "Swiss Army Knife" was made for you.If you are tired of complex setup and redundant features, and you only want to finish a book with undivided attention or quietly read through a translated chapter, then this Swiss Army knife was made for you.

Screenshots

Readest4 screens
Aya Reader4 screens

Verdict

The call

The clearest difference is rating: Aya Reader at 5.0 against Readest's 4.5. Aya Reader also leads on in-app purchases (none vs 9) and review sentiment (100% vs 84%). Readest's advantage is ratings volume (185 vs 1) and device support (3 vs 1). On price 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. Aya Reader asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Aya Reader holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Readest has 185 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 84% of Readest's written reviews are positive against 100% of Aya Reader's.

UpkeepUpdate frequency

Readest ships an update fortnightly, Aya Reader weekly. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

Scorecard8 real differences · 2 level
Readest versus Aya Reader: the parameters behind the verdict, then further details
ParameterReadestAya Reader
PriceFreeFree
Rating4.5 (185 ratings)5.0 (1 ratings) — better
Positive reviews83.9% of reviews100.0% of reviews — better
Number of ratings185 — better1
Update frequencyFortnightlyWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, Mac — betteriPhone
Requires iOS16.4 — better18.6
Further details — not scored
Size57 MB15 MB
Age rating4+4+
DeveloperBilingify LLC晓阳 陈

Customer experience

Readest

All ratings185 ratings
Positive86.5%
Neutral5.4%
Negative8.1%
Written reviews280 reviews
Positive83.9%
Neutral5.4%
Negative10.7%

Aya Reader

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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
None

Aya Reader

No in-app purchases

Questions

Is Readest free?
Readest is free to download, with in-app purchases available.
Is Aya Reader free?
Aya Reader is free to download, with no in-app purchases.
Which has better reviews, Readest or Aya Reader?
Aya Reader is rated higher. Readest averages 4.5 out of 5 from 185 ratings, while Aya Reader averages 5.0 from 1 ratings.
Do Readest or Aya Reader have ads?
Neither Readest nor Aya Reader shows ads.
Which is updated more often, Readest or Aya Reader?
Readest ships an update fortnightly, and Aya Reader weekly. Most recently, Readest was updated on October 11, 2026 and Aya Reader on October 7, 2026.

Other comparisons