Hellrule vs Mathonaut
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Hellrule
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.
- Hack-and-slash runner action
- Challenging and addictive gameplay
- Manually designed levels
- Big boss battles
- Powerful metal music theme
- Retro mode
Read full descriptionHide full description
You were going for your introspective nightly walk under the rain, but it seems that tonight that won't be possible: horror is here. You'll have to use your sturdy umbrella as a sword to slice all those ill-intentioned beings to save the day (the night?, perhaps even the whole world?). • Right-to-the-point horror hack-and-slash runner action. • Challenging and addictive. • Carefully, manually designed levels. • Big bosses at the end of each chapter. • Powerful metal music theme by El Reno Renardo. • Retro mode, for playing like in 1975! Remember: • This will be a free game forever! • No ads at all! • No in-app purchases! Get Hellrule now and have fun!
Mathonaut
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.
- Retro 2D platformer gameplay
- Solve deadly equations
- Space exploration theme
- 20 challenging levels
- Hardcore mode
- Customizable characters and oxygen duration
Read full descriptionHide full description
A RETRO 2D-PLATFORMER IN WHICH MATH MEETS SPACE Embark on a space adventure as an astronaut exploring the mysterious planet, Planeq. Navigate treacherous caverns filled with deadly equations, where every step could be your last. But don't worry, you're equipped with the latest oxygen tech and a brainpower to match ! Think fast and pick the right numbers to stay alive, because oxygen is scarce and time is running out. With each correct equation, you'll uncover the secrets of this world and bring yourself one step closer to salvation. But beware, one false move could leave you gasping for air. So, will you have the wit and the will to find your way through this strange planet and escape with your life ? FEATURES • 20 LEVELS - 20 challenging levels filled with deadly equations. • RETRO AMBIANCE - Old-school visuals and sound effects. • FUN AND CHALLENGING - Designed to be hard, fast, but fun. • HARDOCRE MODE - For the most daring players. • CUSTOMIZABLE PARTIES - Unique playable characters to choose from and configurable oxygen duration for an extra challenge. LINKS • Website : https://mathonaut.skyost.eu/en/. • Suggestions & bug reports : https://mathonaut.skyost.eu/en/contact/. If you have enjoyed this app, feel free to leave a rating on the App Store page of this application.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Hellrule | Mathonaut |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (4 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 4 — better | 2 |
| Update frequency | Every 18 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 12.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 65 MB | 46 MB |
| Age rating | 12+ | 4+ |
| Developer | Pedro J. Estebanez | Hugo Delaunay |
Customer experience
Hellrule
Mathonaut
In-app purchases
Hellrule
No in-app purchases
Mathonaut
- Unlock new characters and more$0.99
