# RainbowStar vs Smart Learning@EdUHK Library

The clearest difference is in-app purchases: Smart Learning@EdUHK Library at none against RainbowStar's 6. RainbowStar's advantage is iOS requirement (12.0 vs 14.1). On price, ads and device support there is nothing between them.

Both are free to download. RainbowStar sells 6 one-off in-app purchases. Smart Learning@EdUHK Library asks for nothing beyond the download.

## The numbers

| Metric | RainbowStar | Smart Learning@EdUHK Library |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Size | 287 MB | 213 MB |
| Requires iOS | **12.0** | 14.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Open Knowledge Association Ltd.](https://appshunter.io/developer/868011308) | [The Education University of Hong Kong](https://appshunter.io/developer/1130838504) |

## What reviewers say

### RainbowStar

[App page](https://appshunter.io/ios/app/rainbowstar/id1251256553)

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 8個金幣 | $0.99 | one-time |
| 48個金幣 | $5.99 | one-time |
| 98個金幣 | $12.99 | one-time |
| 218個金幣 | $27.99 | one-time |
| 368個金幣 | $46.99 | one-time |
| 688個金幣 | $89.99 | one-time |


### Smart Learning@EdUHK Library

[App page](https://appshunter.io/ios/app/smart-learningeduhk-library/id1529210084)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RainbowStar free?

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

### Is Smart Learning@EdUHK Library free?

Smart Learning@EdUHK Library is free to download, with no in-app purchases.

### Do RainbowStar or Smart Learning@EdUHK Library have ads?

Neither RainbowStar nor Smart Learning@EdUHK Library shows ads.

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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.*