# DataMaster Prep vs Number Island 2

The clearest difference is iOS requirement: DataMaster Prep at 15.0 against Number Island 2's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. DataMaster Prep sells 1 one-off in-app purchase and Number Island 2 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | DataMaster Prep | Number Island 2 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Monthly |
| Size | 32 MB | 266 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [bader alshammari](https://appshunter.io/developer/858126240) | [YUCHEN CHANG](https://appshunter.io/developer/1888769274) |

## What reviewers say

### DataMaster Prep

[App page](https://appshunter.io/ios/app/datamaster-prep/id6742799391)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $19.99 | one-time |


### Number Island 2

[App page](https://appshunter.io/ios/app/number-island-2/id6796366984)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Islands | $3.99 | one-time |


## Frequently asked questions

### Is DataMaster Prep free?

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

### Is Number Island 2 free?

Number Island 2 is free to download, with in-app purchases available.

### Do DataMaster Prep or Number Island 2 have ads?

Neither DataMaster Prep nor Number Island 2 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.*