Comparison

ReadOn vs ClaviSay

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

Head to head
About

ReadOn

Features
Read full description

ReadOn – your companion for reading in new languages without breaking your flow. Scan book pages and articles, tap words for instant translations, and keep reading without constantly switching to a dictionary. ReadOn helps you close the “dictionary gap” so you can stay immersed in the text while naturally building vocabulary. Use Word-by-word mode for quick lookups or Deep Read mode for richer explanations and context. View extracted text, copy what you need, save important words, and grow your personal vocabulary as you read. With support for 50+ languages, ReadOn helps you learn faster from real books, manga, articles, and notes. Whether you are studying for exams, improving your reading fluency, or simply enjoying content in a new language, ReadOn helps you read more, understand more, and stop less. Subscription and Trial: ReadOn operates on a subscription model. Some features require users to purchase premium features. Premium features: • Unlimited text scanning (scan and save unlimited books and articles) • Advanced AI analysis (intelligent insights on your reading) • Cloud sync (access your library across devices) • Feature requests (send in ideas and request improvements) Free Trial: We offer a 3-day free trial period for new users. During this trial, you have full access to all premium features. Your subscription will automatically begin after the trial period ends unless you cancel before the trial expires. Automatic Renewal: Your subscription will automatically renew unless you cancel at least 24 hours before the current subscription period ends. You can manage your subscription and turn off auto-renewal in your App Store account settings. Cancellation: You may cancel your subscription at any time through your App Store account. If you cancel during the trial period, you will not be charged. If you cancel after being charged, you will continue to have access until the end of your current billing period. We reserve the right to change the pricing, subscription terms, or benefits associated with in-app purchases. Any such changes will be communicated through the app or on our website. For a detailed breakdown of subscription options, including how to manage or cancel your subscription, please visit our Privacy Policy and Terms of Service pages: Terms of Service: http://tos-privacy.lucas-goldner.com/read-on/terms-of-service.html Privacy Policy: http://tos-privacy.lucas-goldner.com/read-on/privacy.html

About

ClaviSay

Improve your English by reading real-world content and practicing with a personalized AI agent. Save new words and phrases, then engage in focused AI-powered exercises based on your learning history. Receive AI feedback to enhance your own English expressions.

Highlights
  • Read English articles with AI assistance
  • Save vocabulary and expressions
  • Personalized AI practice sessions
  • AI feedback on English expressions
  • Review mistakes and learning items
  • Build a personal learning memory
Features
Read full description

Learn English from real content. Save words, phrases, and sentences from what you read. Turn them into personalized AI Practice with your own learning agent. ClaviSay helps you improve English through real-world reading, vocabulary review, and short AI-powered practice sessions. Instead of studying from generic lessons, you can practice with the English content you actually read. Import or read articles, save useful expressions, and let your AI agent create focused exercises from your learning history. Key features: - Read English articles with AI assistance - Understand words, phrases, and sentences in context - Save vocabulary, expressions, and useful sentences - Practice vocabulary recall and phrase usage - Improve your own English expressions with AI feedback - Review mistakes and save learning items - Build a personal learning memory with your AI agent ClaviSay is designed for learners who want to improve English through real reading, daily practice, and practical expression. AI-generated explanations and feedback are provided for language learning support and may not always be perfect.

Screenshots

ReadOn4 screens
ClaviSay4 screens

Verdict

The call

The clearest difference is in-app purchases: ClaviSay at none against ReadOn's 2. ClaviSay also leads on iOS requirement (13.0 vs 17.6). On price, update cadence, ads and device support 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. ReadOn sells 2 in-app purchases, starting at $4.99 per 7 days. ClaviSay asks for nothing beyond the download.

UpkeepUpdate frequency

ReadOn ships an update every 6 days, ClaviSay weekly. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

Scorecard2 real differences · 8 level
ReadOn versus ClaviSay: the parameters behind the verdict, then further details
ParameterReadOnClaviSay
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 6 days — betterWeekly
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhoneiPhone, iPod — better
Requires iOS17.613.0 — better
Further details — not scored
Size72 MB49 MB
Age rating4+4+
DeveloperLucas Goldner松 颜

In-app purchases

2 purchases

ReadOn

Subscriptions2
  • Weekly3 Days trial$4.997 Days
  • Yearly3 Days trial$24.991 Year
None

ClaviSay

No in-app purchases

Questions

Is ReadOn free?
ReadOn is free to download, with in-app purchases available.
Is ClaviSay free?
ClaviSay is free to download, with no in-app purchases.
Do ReadOn or ClaviSay have ads?
Neither ReadOn nor ClaviSay shows ads.
Which is updated more often, ReadOn or ClaviSay?
ReadOn ships an update every 6 days, and ClaviSay weekly. Most recently, ReadOn was updated on October 24, 2026 and ClaviSay on October 21, 2026.

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