# Polyglutt vs Shelf

The clearest difference is monetization model: Shelf at ad-supported against Polyglutt's subscription. Shelf also leads on ratings volume (5 vs 1). Polyglutt's advantage is ads (none vs shown). On price, rating, update cadence and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Polyglutt against 5.0 for Shelf. That said, the two scores are not equally well evidenced: Shelf has 5 ratings behind it against 1, so its average is the more settled of the two.

Polyglutt ships an update every 3 weeks, Shelf every 6 weeks. The most recent releases landed on September 20, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Polyglutt | Shelf |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/polyglutt/id1277042294/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/shelf/id1620828408/reviews) |
| Number of ratings | 1 | **5** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Subscription | **Ad-supported** |
| Size | 52 MB | 35 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [ILT Inlaesningstjaenst AB](https://appshunter.io/developer/1277042293) | [Beat Technology AS](https://appshunter.io/developer/433400941) |

## What reviewers say

### Polyglutt

[App page](https://appshunter.io/ios/app/polyglutt/id1277042294)

A digital library offering narrated and browsable children's books for preschool. Features books in over 70 languages, including sign language and audio descriptions, with pedagogical support for language development.

**Highlights:** Digital library of children's books, Narrated and browsable content, Books in over 70 languages, Sign language and audio descriptions, Pedagogical support for language development, Discussion questions and key vocabulary

**Features:** macOS Compatibility

**In-app purchases:** none


### Shelf

[App page](https://appshunter.io/ios/app/shelf/id1620828408)

Access your personal library of purchased audiobooks and e-books. Read or listen anywhere, anytime, with or without an internet connection. Enjoy your collection without subscriptions or time limits.

**Highlights:** Access purchased audiobooks and e-books, Read or listen offline, No subscriptions or time limits, Bookmark and comment, Customize reading experience, Adjust playback speed, Sleep timer for audiobooks

**In-app purchases:** none


## Frequently asked questions

### Is Polyglutt free?

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

### Is Shelf free?

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

### Which has better reviews, Polyglutt or Shelf?

Polyglutt and Shelf are both rated 5.0 out of 5 on the App Store, from 1 and 5 ratings respectively.

### Do Polyglutt or Shelf have ads?

Shelf shows ads; Polyglutt does not.

### Which is updated more often, Polyglutt or Shelf?

Polyglutt ships an update every 3 weeks, and Shelf every 6 weeks. Most recently, Polyglutt was updated on September 20, 2026 and Shelf on September 9, 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.*