# MEMO Research vs Maths Monsters

The clearest difference is in-app purchases: MEMO Research at none against Maths Monsters's 1. MEMO Research also leads on iOS requirement (11.0 vs 17.0). Maths Monsters's advantage is update cadence (every 2 days vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Maths Monsters sells 1 one-off in-app purchase. MEMO Research asks for nothing beyond the download.

MEMO Research ships an update every 4 months, Maths Monsters every 2 days. The most recent releases landed on June 5, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | MEMO Research | Maths Monsters |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Size | 54 MB | 637 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TLD ENTERPRISES PTY LTD](https://appshunter.io/developer/1454733702) | [Kendal Slack](https://appshunter.io/developer/1183263943) |

## What reviewers say

### MEMO Research

[App page](https://appshunter.io/ios/app/memo-research/id1561464034)

**In-app purchases:** none


### Maths Monsters

[App page](https://appshunter.io/ios/app/maths-monsters/id6782084439)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Adventure | $5.99 | one-time |


## Frequently asked questions

### Is MEMO Research free?

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

### Is Maths Monsters free?

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

### Do MEMO Research or Maths Monsters have ads?

Neither MEMO Research nor Maths Monsters shows ads.

### Which is updated more often, MEMO Research or Maths Monsters?

MEMO Research ships an update every 4 months, and Maths Monsters every 2 days. Most recently, MEMO Research was updated on June 5, 2026 and Maths Monsters on September 9, 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.*