# 一按通 vs RainbowStar

The clearest difference is in-app purchases: 一按通 at none against RainbowStar's 6. RainbowStar's advantage is update cadence (every 5 weeks vs every 11 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. RainbowStar sells 6 one-off in-app purchases. 一按通 asks for nothing beyond the download.

一按通 ships an update every 11 months, RainbowStar every 5 weeks. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 一按通 | RainbowStar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id732804554/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 5 weeks** |
| Size | 618 MB | 287 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SAHK](https://appshunter.io/developer/732804557) | [Open Knowledge Association Ltd.](https://appshunter.io/developer/868011308) |

## What reviewers say

### 一按通

[App page](https://appshunter.io/ios/app/id732804554)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is 一按通 free?

一按通 is free to download, with no in-app purchases.

### Is RainbowStar free?

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

### Do 一按通 or RainbowStar have ads?

Neither 一按通 nor RainbowStar shows ads.

### Which is updated more often, 一按通 or RainbowStar?

一按通 ships an update every 11 months, and RainbowStar every 5 weeks. Most recently, 一按通 was updated on October 23, 2026 and RainbowStar on October 29, 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.*