Comparison

Gloss vs Coral Reader

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

Head to head
About

Gloss

Features
Read full description

Gloss turns anything you read into a conversation with its author. Highlight any passage โ€” in a book, a PDF, an article you saved, or your own notes โ€” and a margin note appears, explaining it more deeply in a voice informed by the author's style (or a thoughtful guide when there's no single author). Ask a follow-up and the note answers, staying right beside the text. The AI lives in the margins, never as a chat window โ€” it reads like a thoughtful annotation, beside the text. Read anything: โ€ข EPUB books (DRM-free) โ€” your files, Project Gutenberg, Standard Ebooks, author-direct. (Kindle and Apple Books DRM files aren't supported.) โ€ข PDFs โ€” papers, manuals, anything you've saved. โ€ข Articles โ€” paste a link and Gloss pulls the readable text to annotate. โ€ข Your notes โ€” write or paste text and gloss it like a book. โ€ข Select text โ†’ Gloss, Go deeper, Define, or Ask โ€” the note streams into the margin (a side column on iPad, an anchored card on iPhone). โ€ข Distraction-free reading โ€” three themes (light, sepia, dark), adjustable font, size, spacing, and margins. โ€ข Your highlights and notes are saved on your device and travel with each document. Reading is free forever. Your first 10 glosses are free; Gloss Unlimited ($5.99/month or $49.99/year) unlocks unlimited notes. Your files stay on your device โ€” only the highlighted passage and a small amount of surrounding text are sent to generate a note. Author "voices" are an AI interpretation, not the real author, and may be inaccurate. Gloss Unlimited is an auto-renewable subscription: $5.99/month or $49.99/year. Payment is charged to your Apple Account at purchase confirmation. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period; manage or cancel anytime in your Apple Account settings. Terms of Use (EULA): https://gloss.nyrai.ai/terms.html Privacy Policy: https://gloss.nyrai.ai/privacy.html

About

Coral Reader

Features
Read full description

Your books. Your documents. One beautiful reader. Coral Reader transforms EPUB, PDF, Markdown, TXT, HTML, FB2, DOCX, and ODT files into a calm reading experience on iPhone and iPad. READ YOUR WAY Build your library, search inside books, explore chapters, and save bookmarks, highlights, and notes. Adjust fonts, spacing, margins, alignment, brightness, rotation, and Light, Dark, Paper, or Auto themes. LISTEN, TRANSLATE, AND LEARN Listen with Read Aloud, translate passages on-device, and turn unfamiliar words into lasting vocabulary. Practice with adaptive quizzes, typed recall, contextual exercises, definitions, streaks, insights, and reminders. BUILD A READING HABIT Track reading time, daily activity, completed books, and reading streaks. Your books, notes, progress, and vocabulary stay on your device. CORAL PRO Unlock unlimited reading, bookmarks, highlights, notes, and the complete premium experience with monthly or yearly plans. Coral Reader is an independent reader for files you own and does not include a bookstore. Terms: https://amih90.github.io/coral-reader/legal/terms-of-use.html Privacy: https://amih90.github.io/coral-reader/legal/privacy-policy.html

Screenshots

Gloss4 screens
Coral Reader4 screens

Verdict

The call

Gloss and Coral Reader are too close to call on the numbers: across 5 compared parameters โ€” price, ads, in-app purchases and device support among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Gloss sells 2 in-app purchases, starting at $5.99 per month and Coral Reader sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Gloss versus Coral Reader: the parameters behind the verdict, then further details
ParameterGlossCoral Reader
PriceFreeFree
Update frequencyโ€”Every 10 days
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 โ€” better18.0
Further details โ€” not scored
Size13 MB137 MB
Age rating17+4+
DeveloperNYRAI LLCYanai Hollander

In-app purchases

2 purchases

Gloss

Subscriptions2
  • Gloss Monthly$5.991 Month
  • Gloss Yearly$49.991 Year
2 purchases

Coral Reader

Subscriptions2
  • Coral Reader7 Days trial$1.991 Month
  • Coral Reader7 Days trial$17.991 Year

Questions

Is Gloss free?
Gloss is free to download, with in-app purchases available.
Is Coral Reader free?
Coral Reader is free to download, with in-app purchases available.
Do Gloss or Coral Reader have ads?
Neither Gloss nor Coral Reader shows ads.

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