# BookSmartApp vs Polylingo

The clearest difference is in-app purchases: BookSmartApp at none against Polylingo's 3. BookSmartApp also leads on update cadence (daily vs every 6 days) and rating (5.0 vs 4.8). Polylingo's advantage is ratings volume (4 vs 1) and iOS requirement (13.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Polylingo sells 3 in-app purchases, starting at $5.99 per 7 days. BookSmartApp asks for nothing beyond the download.

BookSmartApp holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

BookSmartApp ships an update daily, Polylingo every 6 days. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | BookSmartApp | Polylingo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/booksmartapp/id6445836113/reviews)** | [4.8 (4 ratings)](https://appshunter.io/ios/app/polylingo-language-reader/id6758527666/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 6 days |
| Monetization | **Free** | Freemium |
| Size | 16 MB | 128 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 9+ |
| Developer | [Jeff Chandler](https://appshunter.io/developer/1592420241) | [Jesse Deng](https://appshunter.io/developer/1584491248) |

## What reviewers say

### BookSmartApp

[App page](https://appshunter.io/ios/app/booksmartapp/id6445836113)

This app helps you remember and engage with your physical books. Save highlights, get daily reminders, and use an AI assistant to answer questions, create social posts, or generate images based on your reading.

**Highlights:** Save and organize book highlights, Daily highlight reminders, AI assistant for questions and content generation, Generate images from book passages, Share highlights and generated content

**Features:** macOS Compatibility

**In-app purchases:** none


### Polylingo

[App page](https://appshunter.io/ios/app/polylingo-language-reader/id6758527666)

Enhance language learning through reading with instant translations, synchronized audio narration, and AI-generated stories. Save new vocabulary and import your own content to practice reading in a foreign language.

**Highlights:** Instant tap-to-translate, Audio narration with word highlighting, AI-powered story generation, Personal phrase book, Import EPUB, PDF, and text files, 10 supported languages, Customizable reading themes

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro Subscription | $5.99 | per 7 days |
| Monthly Pro | $14.99 | per month |
| Yearly Pro Subscription | $39.99 | per year |


## Frequently asked questions

### Is BookSmartApp free?

BookSmartApp is free to download, with no in-app purchases.

### Is Polylingo free?

Polylingo is free to download, with in-app purchases available.

### Which has better reviews, BookSmartApp or Polylingo?

BookSmartApp is rated higher. BookSmartApp averages 5.0 out of 5 from 1 ratings, while Polylingo averages 4.8 from 4 ratings.

### Do BookSmartApp or Polylingo have ads?

Neither BookSmartApp nor Polylingo shows ads.

### Which is updated more often, BookSmartApp or Polylingo?

BookSmartApp ships an update daily, and Polylingo every 6 days. Most recently, BookSmartApp was updated on October 13, 2026 and Polylingo on October 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*