# Memorize Prime Numbers vs DrumCircle

The clearest difference is ads: DrumCircle at none against Memorize Prime Numbers's shown. DrumCircle also leads on update cadence (every 3 months vs every 14 months) and iOS requirement (13.0 vs 16.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Memorize Prime Numbers ships an update every 14 months, DrumCircle every 3 months. The most recent releases landed on October 25, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Memorize Prime Numbers | DrumCircle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/memorize-prime-numbers/id6475699754/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 14 months | **Every 3 months** |
| Monetization | Ad-supported | — |
| Size | 84 MB | 27 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Oscar Tsang](https://appshunter.io/developer/416987065) | [超 陈](https://appshunter.io/developer/1672363072) |

## What reviewers say

### Memorize Prime Numbers

[App page](https://appshunter.io/ios/app/memorize-prime-numbers/id6475699754)

Learn to memorize hundreds of prime numbers within a week using a provided method. This app offers a unique approach to remembering these special numbers.

**Highlights:** Memorize hundreds of prime numbers, Learn a provided memorization method, Focus on prime number recall, Suitable for quick learning

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

**In-app purchases:** none


### DrumCircle

[App page](https://appshunter.io/ios/app/drumcircle/id6751166146)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Memorize Prime Numbers free?

Memorize Prime Numbers is free to download, with no in-app purchases.

### Is DrumCircle free?

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

### Do Memorize Prime Numbers or DrumCircle have ads?

Memorize Prime Numbers shows ads; DrumCircle does not.

### Which is updated more often, Memorize Prime Numbers or DrumCircle?

Memorize Prime Numbers ships an update every 14 months, and DrumCircle every 3 months. Most recently, Memorize Prime Numbers was updated on October 25, 2026 and DrumCircle on October 4, 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.*