# Hellrule vs Mathonaut

The clearest difference is in-app purchases: Hellrule at none against Mathonaut's 1. Hellrule also leads on rating (3.3 vs 3.0) and iOS requirement (12.0 vs 14.0). Mathonaut's advantage is update cadence (every 3 months vs every 18 months) and device support (4 vs 2). On price, ratings volume and ads there is nothing between them.

Both are free to download. Mathonaut sells 1 one-off in-app purchase. Hellrule asks for nothing beyond the download.

Hellrule holds the better App Store score, 3.3 against 3.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

Hellrule ships an update every 18 months, Mathonaut every 3 months. The most recent releases landed on October 29, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Hellrule | Mathonaut |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (4 ratings)](https://appshunter.io/ios/app/hellrule/id1240658597/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/mathonaut/id1673790210/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 3 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 65 MB | 46 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 12+ | 4+ |
| Developer | [Pedro J. Estebanez](https://appshunter.io/developer/603961468) | [Hugo Delaunay](https://appshunter.io/developer/1456648264) |

## What reviewers say

### Hellrule

[App page](https://appshunter.io/ios/app/hellrule/id1240658597)

Embark on a thrilling hack-and-slash adventure where your umbrella becomes a powerful sword against encroaching horror. Navigate challenging, handcrafted levels, battle formidable bosses, and enjoy a retro gaming experience with a heavy metal soundtrack.

**Highlights:** Hack-and-slash runner action, Challenging and addictive gameplay, Manually designed levels, Big boss battles, Powerful metal music theme, Retro mode

**Features:** Vision Pro support

**In-app purchases:** none


### Mathonaut

[App page](https://appshunter.io/ios/app/mathonaut/id1673790210)

Embark on a retro 2D platformer adventure where math meets space exploration. Solve equations to navigate treacherous caverns, manage oxygen, and uncover the secrets of a mysterious planet. Choose from unique characters and customize your challenge.

**Highlights:** Retro 2D platformer gameplay, Solve deadly equations, Space exploration theme, 20 challenging levels, Hardcore mode, Customizable characters and oxygen duration

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock new characters and more | $0.99 | one-time |


## Frequently asked questions

### Is Hellrule free?

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

### Is Mathonaut free?

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

### Which has better reviews, Hellrule or Mathonaut?

Hellrule is rated higher. Hellrule averages 3.3 out of 5 from 4 ratings, while Mathonaut averages 3.0 from 2 ratings.

### Do Hellrule or Mathonaut have ads?

Neither Hellrule nor Mathonaut shows ads.

### Which is updated more often, Hellrule or Mathonaut?

Hellrule ships an update every 18 months, and Mathonaut every 3 months. Most recently, Hellrule was updated on October 29, 2026 and Mathonaut on October 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.*