# Memorize Pi π vs Drift Rush 3D

The clearest difference is ads: Memorize Pi π at none against Drift Rush 3D's shown. Drift Rush 3D's advantage is iOS requirement (15.0 vs 26.1). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Memorize Pi π sells 4 one-off in-app purchases and Drift Rush 3D sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Memorize Pi π | Drift Rush 3D |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 days | — |
| Size | 21 MB | 253 MB |
| Requires iOS | 26.1 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Roman Savenok](https://appshunter.io/developer/1230893715) | [Thuy On](https://appshunter.io/developer/1884514139) |

## What reviewers say

### Memorize Pi π

[App page](https://appshunter.io/ios/app/memorize-pi-memory-game/id6762457784)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support the Developer | $2.99 | one-time |
| Lifetime Premium | $4.99 | one-time |
| Support the Developer | $9.99 | one-time |
| Support the Developer | $29.99 | one-time |


### Drift Rush 3D

[App page](https://appshunter.io/ios/app/drift-rush-3d/id6793876187)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cash1 | $0.99 | one-time |
| Cash2 | $4.99 | one-time |
| Remove Ads | $9.99 | one-time |
| Cash3 | $9.99 | one-time |
| Cash4 | $19.99 | one-time |
| Cash5 | $29.99 | one-time |


## Frequently asked questions

### Is Memorize Pi π free?

Memorize Pi π is free to download, with in-app purchases available.

### Is Drift Rush 3D free?

Drift Rush 3D is free to download, with in-app purchases available.

### Do Memorize Pi π or Drift Rush 3D have ads?

Drift Rush 3D shows ads; Memorize Pi π does not.

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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.*