# Riddlerr vs Mental Math

Riddlerr and Mental Math are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Riddlerr ships an update every 3 weeks, Mental Math every 6 weeks. The most recent releases landed on October 15, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Riddlerr | Mental Math |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Size | 20 MB | 132 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Vladyslav Yermakov](https://appshunter.io/developer/1659418110) | [JEU TECHNOLOGY (PRIVATE) LIMITED](https://appshunter.io/developer/1546624577) |

## What reviewers say

### Riddlerr

[App page](https://appshunter.io/ios/app/riddlerr/id1659418108)

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

**In-app purchases:** none


### Mental Math

[App page](https://appshunter.io/ios/app/mental-math-brain-puzzle/id6480279455)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Riddlerr free?

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

### Is Mental Math free?

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

### Do Riddlerr or Mental Math have ads?

Both Riddlerr and Mental Math show ads.

### Which is updated more often, Riddlerr or Mental Math?

Riddlerr ships an update every 3 weeks, and Mental Math every 6 weeks. Most recently, Riddlerr was updated on October 15, 2026 and Mental Math on October 19, 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.*