# MERS Fun Reading vs RainbowSky

The clearest difference is update cadence: RainbowSky at every 2 weeks against MERS Fun Reading's every 5 months. RainbowSky also leads on device support (3 vs 1). MERS Fun Reading's advantage is iOS requirement (10.0 vs 12.0). On price, 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.

MERS Fun Reading ships an update every 5 months, RainbowSky every 2 weeks. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | MERS Fun Reading | RainbowSky |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 48 MB | 292 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Modern Educational Research Society, LTD](https://appshunter.io/developer/432268704) | [Open Knowledge Association Ltd.](https://appshunter.io/developer/868011308) |

## What reviewers say

### MERS Fun Reading

[App page](https://appshunter.io/ios/app/mers-fun-reading/id779392847)

This app offers a collection of downloadable electronic storybooks for offline reading. It features narration in Cantonese, Putonghua, and English, with interactive drawing tools and word highlighting to enhance learning and creativity for young readers.

**Highlights:** Offline electronic storybooks, Cantonese, Putonghua, and English narration, Interactive drawing tools, Word highlighting during narration, Extensive story variety

**Features:** macOS Compatibility

**In-app purchases:** none


### RainbowSky

[App page](https://appshunter.io/ios/app/rainbowsky/id6771268020)

**In-app purchases:** none


## Frequently asked questions

### Is MERS Fun Reading free?

MERS Fun Reading is free to download, with no in-app purchases.

### Is RainbowSky free?

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

### Do MERS Fun Reading or RainbowSky have ads?

Neither MERS Fun Reading nor RainbowSky shows ads.

### Which is updated more often, MERS Fun Reading or RainbowSky?

MERS Fun Reading ships an update every 5 months, and RainbowSky every 2 weeks. Most recently, MERS Fun Reading was updated on November 1, 2026 and RainbowSky on October 31, 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.*