# RainbowStar vs SAHK 香港耀能協會

The clearest difference is in-app purchases: SAHK 香港耀能協會 at none against RainbowStar's 6. SAHK 香港耀能協會 also leads on iOS requirement (9.0 vs 12.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. RainbowStar sells 6 one-off in-app purchases. SAHK 香港耀能協會 asks for nothing beyond the download.

RainbowStar ships an update every 5 weeks, SAHK 香港耀能協會 monthly. The most recent releases landed on October 11, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | RainbowStar | SAHK 香港耀能協會 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Monthly** |
| Size | 287 MB | 96 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Open Knowledge Association Ltd.](https://appshunter.io/developer/868011308) | [BULL.B TECHNOLOGY LIMITED](https://appshunter.io/developer/996574459) |

## 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 |


### SAHK 香港耀能協會

[App page](https://appshunter.io/ios/app/sahk/id1546846548)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RainbowStar free?

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

### Is SAHK 香港耀能協會 free?

SAHK 香港耀能協會 is free to download, with no in-app purchases.

### Do RainbowStar or SAHK 香港耀能協會 have ads?

Neither RainbowStar nor SAHK 香港耀能協會 shows ads.

### Which is updated more often, RainbowStar or SAHK 香港耀能協會?

RainbowStar ships an update every 5 weeks, and SAHK 香港耀能協會 monthly. Most recently, RainbowStar was updated on October 11, 2026 and SAHK 香港耀能協會 on September 27, 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.*