# online Bibliotheek vs Junior Einstein

The clearest difference is rating: Junior Einstein at 4.8 against online Bibliotheek's 3.1. Junior Einstein also leads on iOS requirement (14.0 vs 16.0). online Bibliotheek's advantage is update cadence (monthly vs every 2 months). On price, ratings volume, ads 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.

Junior Einstein holds the better App Store score, 4.8 against 3.1. Both are backed by a comparable volume of ratings — 33 and 20 respectively.

online Bibliotheek ships an update monthly, Junior Einstein every 2 months. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | online Bibliotheek | Junior Einstein |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (33 ratings)](https://appshunter.io/ios/app/online-bibliotheek/id1517985604/reviews) | **[4.8 (20 ratings)](https://appshunter.io/ios/app/junior-einstein/id1576485769/reviews)** |
| Number of ratings | **33** | 20 |
| Positive reviews | 13.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | Free |
| Size | 71 MB | 6 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Koninklijke Bibliotheek](https://appshunter.io/developer/576195021) | [Junior Einstein B.V.](https://appshunter.io/developer/617666108) |

## What reviewers say

### online Bibliotheek

[App page](https://appshunter.io/ios/app/online-bibliotheek/id1517985604)

Access and enjoy a vast collection of e-books and audiobooks on your mobile device. Browse, borrow, and listen to titles from various genres, all within a single, user-friendly application. Create personalized wishlists and preview content before borrowing.

**Highlights:** Borrow e-books and audiobooks, Search and discover titles, Create personalized wishlists, Preview books before borrowing, Read and listen anywhere, anytime

**In-app purchases:** none


### Junior Einstein

[App page](https://appshunter.io/ios/app/junior-einstein/id1576485769)

This app provides an online learning and practice environment for primary school subjects, offering thousands of exercises for children aged 4-12. It allows children to practice at their own level, track progress, and access all exercises freely.

**Highlights:** Online learning environment, Practice exercises for primary school, Suitable for ages 4-12, Progress tracking for parents and teachers, Free practice access, Weekly tasks set by parents/teachers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is online Bibliotheek free?

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

### Is Junior Einstein free?

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

### Which has better reviews, online Bibliotheek or Junior Einstein?

Junior Einstein is rated higher. online Bibliotheek averages 3.1 out of 5 from 33 ratings, while Junior Einstein averages 4.8 from 20 ratings.

### Do online Bibliotheek or Junior Einstein have ads?

Neither online Bibliotheek nor Junior Einstein shows ads.

### Which is updated more often, online Bibliotheek or Junior Einstein?

online Bibliotheek ships an update monthly, and Junior Einstein every 2 months. Most recently, online Bibliotheek was updated on October 7, 2026 and Junior Einstein on October 10, 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.*