# R21

> R21 (iPhone/iPad app by CAVES BOOKS LTD..)

- Source: https://appshunter.io/ios/app/r21/id1197252445 (this page in markdown: same URL + `.md`)
- Developer: [CAVES BOOKS LTD.](https://appshunter.io/developer/547924599)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 9.0 · 114 MB
- Released: 2017-02-09
- Data updated: 2026-06-01
- User reviews in markdown: https://appshunter.io/ios/app/r21/id1197252445/reviews.md

## What is R21?

R21 is a new six-level reading series carefully designed to help young learners develop the skills they’ll need to succeed in the 21st century. Each book covers a range of topics and makes use of the latest Content and Language Integrated Learning (CLIL) methods to ensure they’ll appeal to young children and have a connection to children’s wider studies and experiences.
With R21, reading is fun, inspiring as well as informative, and children will not only develop their reading competence but also become a great thinker in the 21st century.


## Version history (last 5 releases)

### 1.24 — 2023-12-05

bug fix

### 1.23 — 2023-05-30

bug fix

### 1.22 — 2023-05-27

bug fix

### 1.21 — 2023-03-09

bug fix

### 1.20 — 2023-01-01

bug fix

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| App | Rating | Price | Category |
| --- | --- | --- | --- |
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| [EZTalking AI English Learning](https://appshunter.io/ios/app/eztalking-ai-english-learning/id1571906929) | 2.8 (5) | Free | Education |
| [HJJ GO｜All-in-One Learning App](https://appshunter.io/ios/app/hjj-goall-in-one-learning-app/id1581621835) | 4.1 (11) | Free | Education |
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| [Ann Buddy](https://appshunter.io/ios/app/ann-buddy/id6741045621) | — | Free | Education |
| [Interactive science 2nd](https://appshunter.io/ios/app/interactive-science-2nd/id1515085020) | 5.0 (1) | Free | Education |

## More apps by CAVES BOOKS LTD.

- [Caves Media Player](https://appshunter.io/ios/app/caves-media-player/id1231364683)
- [P21](https://appshunter.io/ios/app/p21/id1453823561)

All apps by CAVES BOOKS LTD.: https://appshunter.io/developer/547924599

## Related topics

[rcl reads](https://appshunter.io/ios/topics/rcl-reads)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*