Gloss vs ClickBook
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Gloss
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Gloss turns anything you read into a conversation with its author. Highlight any passage β in a book, a PDF, an article you saved, or your own notes β 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 β it reads like a thoughtful annotation, beside the text. Read anything: β’ EPUB books (DRM-free) β your files, Project Gutenberg, Standard Ebooks, author-direct. (Kindle and Apple Books DRM files aren't supported.) β’ PDFs β papers, manuals, anything you've saved. β’ Articles β paste a link and Gloss pulls the readable text to annotate. β’ Your notes β write or paste text and gloss it like a book. β’ Select text β Gloss, Go deeper, Define, or Ask β the note streams into the margin (a side column on iPad, an anchored card on iPhone). β’ Distraction-free reading β three themes (light, sepia, dark), adjustable font, size, spacing, and margins. β’ 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 β 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
ClickBook
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Tap a word. Understand it. Keep reading. ClickBook is an ebook reader with an AI that lives inside the app. Tap any word you do not know and it explains it right there on the page, without leaving your book and without looking anything up. Because the AI runs on your phone, it works anywhere β on a plane, on the underground, in a country where your data plan does not. There is no account to create, no email to hand over, and no subscription. WHAT HAPPENS WHEN YOU TAP A WORD β’ Meaning β a short, plain definition in the language of the book β’ Example β the word used in fresh sentences, so it actually sticks β’ Translation β the word explained in your own language (Pro) β’ Context β the sentence around it explained in your own language (Pro) β’ Think deeper β a longer, more careful explanation when a word is tricky (Pro) FOR READING IN A LANGUAGE YOU ARE STILL LEARNING Choose your mother tongue when you set the app up, and explanations come back in it. You can read a novel slightly above your level without a dictionary in your other hand, and without breaking the thread of the story every few minutes. Every word you look up is saved to your vocabulary list, with the sentence you found it in. PRIVACY, THE REAL KIND The AI model ships inside the app. It is not a wrapper around a chatbot in a data centre, so your books and the words you look up never leave your device. Turn on airplane mode and everything still works β that is the test, and it passes. No account. No sign-up. No tracking. No ads. FREE, AND WHAT PRO ADDS Free gives you the whole reader, your library, offline AI explanations of what a word means, examples that use it, and your vocabulary list. ClickBook Pro is a single one-time purchase β not a subscription β and adds translation into your own language, context translation of the whole sentence, deeper explanations, changing your mother tongue whenever you like, and control over the order the answers appear in. YOUR BOOKS Open EPUB files from anywhere on your device or from iCloud Drive. PDFs are converted when you import them. Three classics are included so you have something to read the moment you open the app. Adjustable text size, line spacing, margins and a night theme, because a reader you cannot read comfortably is not much of a reader.
Screenshots
Verdict
The clearest difference is in-app purchases: ClickBook at none against Gloss's 2. ClickBook also leads on iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Gloss sells 2 in-app purchases, starting at $5.99 per month. ClickBook asks for nothing beyond the download.
| Parameter | Gloss | ClickBook |
|---|---|---|
| Price | Free | Free |
| Update frequency | β | Every 4 days |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Devices | iPhone, iPad | iPhone, iPad, iPod β better |
| Requires iOS | 17.0 | 15.1 β better |
| Further details β not scored | ||
| Size | 13 MB | 1.8 GB |
| Age rating | 17+ | 4+ |
| Developer | NYRAI LLC | Mohamad Mohamad |
In-app purchases
Gloss
- Gloss Monthly$5.991 Month
- Gloss Yearly$49.991 Year
ClickBook
No in-app purchases





