Comparison

Vesper vs Gloss

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

Head to head
About

Vesper

Features
Read full description

A calm, focused place to read your own EPUB and PDF books and keep a private journal of everything you read. Load your library, open a book, and the reader gets out of the way. Tap once to hide every chrome element so it's just you and the page. Highlights you save show up in a Quote of the Day widget on your Home Screen, so the lines that mattered come back to find you later. A reading buddy lives inside the book. Tap the chat button on any page and ask about what you're looking at โ€” a phrase, a character, the historical moment, your own half-formed thought. A short answer appears beside the page. Useful for catching a reference, asking a question, working through a passage out loud, or when a scene just wants to be talked about. The journal half of the app tracks what you're reading, what you've finished, and what's still waiting. Build custom views with filters and sorts โ€” Currently Reading, Finished This Year, By Genre, by anything you care about. Tag books with genres and subgenres, add notes, set reading status. It's a bookshelf you actually use. Features: โ€ข Read EPUB and PDF files from your library, iCloud Drive, Files, or anywhere on your device โ€ข Ask AI about the page you're on, without leaving the book โ€ข Save highlights and revisit them via the Home Screen widget โ€ข Track reading status, finish dates, genres, and notes per book โ€ข Build custom filtered views of your library โ€ข Multiple typefaces, adjustable size, and full theme control โ€ข Automatic Day/Night theme that follows local sunset โ€ข Private iCloud sync across iPhone and iPad โ€” your data, your account โ€ข Designed for both phone and iPad Bring your own EPUBs and PDFs. Read at your pace. Keep the record. Terms of service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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

Screenshots

Vesper4 screens
Gloss4 screens

Verdict

The call

Vesper and Gloss 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. Vesper sells 3 in-app purchases, starting at $2.99 per month and Gloss sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Vesper versus Gloss: the parameters behind the verdict, then further details
ParameterVesperGloss
PriceFreeFree
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.517.0 โ€” better
Further details โ€” not scored
Size9 MB13 MB
Age rating4+17+
DeveloperS TanNYRAI LLC

In-app purchases

3 purchases

Vesper

Subscriptions2
  • Vesper Premium Monthly$2.991 Month
  • Vesper Premium Yearly$24.991 Year
One-time1
  • Book Library Lifetime$24.99
2 purchases

Gloss

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

Questions

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

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