# RainbowStar vs PassIT K53

The clearest difference is iOS requirement: RainbowStar at 12.0 against PassIT K53's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. RainbowStar sells 6 one-off in-app purchases and PassIT K53 sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

RainbowStar ships an update every 5 weeks, PassIT K53 every 3 weeks. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | RainbowStar | PassIT K53 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Size | 287 MB | 110 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Open Knowledge Association Ltd.](https://appshunter.io/developer/868011308) | [Warrick Henderson](https://appshunter.io/developer/6779983708) |

## 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 |


### PassIT K53

[App page](https://appshunter.io/ios/app/passit-k53-learners-licence/id6779983706)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PassIT Priority Monthly | $1.99 | per month |
| PassIT Priority Annual | $4.99 | per year |


## Frequently asked questions

### Is RainbowStar free?

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

### Is PassIT K53 free?

PassIT K53 is free to download, with in-app purchases available.

### Do RainbowStar or PassIT K53 have ads?

Neither RainbowStar nor PassIT K53 shows ads.

### Which is updated more often, RainbowStar or PassIT K53?

RainbowStar ships an update every 5 weeks, and PassIT K53 every 3 weeks. Most recently, RainbowStar was updated on October 11, 2026 and PassIT K53 on October 24, 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.*