# RainbowStar vs 13e education

The clearest difference is in-app purchases: 13e education at none against RainbowStar's 6. RainbowStar's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On price, update cadence and ads there is nothing between them.

Both are free to download. RainbowStar sells 6 one-off in-app purchases. 13e education asks for nothing beyond the download.

RainbowStar ships an update every 5 weeks, 13e education every 2 months. The most recent releases landed on October 11, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | RainbowStar | 13e education |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Size | 287 MB | 27 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Open Knowledge Association Ltd.](https://appshunter.io/developer/868011308) | [Little Tree Technology Service Company Limited](https://appshunter.io/developer/1581364333) |

## 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 |


### 13e education

[App page](https://appshunter.io/ios/app/13e-education/id1640954044)

**In-app purchases:** none


## Frequently asked questions

### Is RainbowStar free?

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

### Is 13e education free?

13e education is free to download, with no in-app purchases.

### Do RainbowStar or 13e education have ads?

Neither RainbowStar nor 13e education shows ads.

### Which is updated more often, RainbowStar or 13e education?

RainbowStar ships an update every 5 weeks, and 13e education every 2 months. Most recently, RainbowStar was updated on October 11, 2026 and 13e education on October 13, 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.*