Comparison

Pub Viewer vs Instant Reader

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

Head to head
About

Pub Viewer

Features
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Pub Viewer is a mobile application with a modern UI/UX that provides a text viewer feature. It allows users to conveniently enjoy novels and text-based content, and includes a Text-to-Speech (TTS) feature to listen to the content audibly.

About

Instant Reader

Features
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This app allows users to work with selected text from PDF documents and web pages using customizable actions and parameters. Key Features & Use Cases Select any word or phrase in English or other languages and request a translation (e.g., Japanese, Chinese, etc.) Select a sentence and request a grammar breakdown or explanation Select a word to open its Wikipedia page for additional context Search images related to selected text using Google Image results Users can define and customize their own parameters to extend functionality and create personalized workflows. AI Integration The app supports connecting to external AI services to generate responses based on selected text. Supported Content: - PDF documents - TXT files - Web pages - Notes More content types and features are planned in future updates. Terms of use: https://app.notion.com/p/Instant-Reader-Terms-of-Use-35315d340c0580ef8459d581696c3e5e Policy: https://app.notion.com/p/Instant-Reader-Policy-34015d340c05800ea627e951926c33cd

Screenshots

Pub Viewer4 screens
Instant Reader4 screens

Verdict

The call

The clearest difference is in-app purchases: Pub Viewer at none against Instant Reader's 1. Pub Viewer also leads on update cadence (daily vs every 2 weeks) and iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

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. Instant Reader sells 1 in-app purchase, starting at $2.99 per month. Pub Viewer asks for nothing beyond the download.

UpkeepUpdate frequency

Pub Viewer ships an update daily, Instant Reader every 2 weeks. The most recent releases landed on October 18, 2026 and October 12, 2026 respectively.

Scorecard3 real differences ยท 3 level
Pub Viewer versus Instant Reader: the parameters behind the verdict, then further details
ParameterPub ViewerInstant Reader
PriceFreeFree
Update frequencyDaily โ€” betterEvery 2 weeks
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS15.0 โ€” better17.0
Further details โ€” not scored
Size40 MB3 MB
Age rating4+17+
DeveloperCheonryong JangRoman Vygnich

In-app purchases

None

Pub Viewer

No in-app purchases

1 purchases

Instant Reader

Subscriptions1
  • Unlimited Actions$2.991 Month

Questions

Is Pub Viewer free?
Pub Viewer is free to download, with no in-app purchases.
Is Instant Reader free?
Instant Reader is free to download, with in-app purchases available.
Do Pub Viewer or Instant Reader have ads?
Neither Pub Viewer nor Instant Reader shows ads.
Which is updated more often, Pub Viewer or Instant Reader?
Pub Viewer ships an update daily, and Instant Reader every 2 weeks. Most recently, Pub Viewer was updated on October 18, 2026 and Instant Reader on October 12, 2026.

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