Poly Rules! vs 37S
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Poly Rules!
A challenging sorting game where the rules dynamically change as you progress. It offers increasingly complex scenarios to test your cognitive abilities. Researchers can inquire about using the game for studies.
- Dynamic rule changes
- Increasingly complex scenarios
- Cognitive benefit focus
- Research support available
- Log storage and analytics (coming soon)
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PolyRules is a challenging sorting game where the rules change as you play. As you progress through the game you will encounter increasingly more complicated scenarios that challenge you in ways you can't imagine. The current release is our first prototype and we will update the game semi-frequently as we move towards a design that features tried and true game design to facilitate the cognitive benefits this game aids to provide. Researchers who are interested in using this game for their own studies please reach out to us to us through our support page for more information on how to best use this App. We have several ways to support you including a central server to store logs and automatic analytics which will be implemented in the coming weeks.
37S
A challenging arcade game where players must navigate a square through a maze of moving blocks and walls for 37 seconds. It's an addictive test of reflexes and precision, rumored to be used by the US Air Force for pilot training.
- Hold and drag gameplay
- Avoid moving blocks and walls
- Test reflexes and precision
- Addictive challenge
- Simple controls
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To start the game click and hold the square in center of screen. The aim of the game is to move the square around the screen without touching the wall or getting hit by any of the blocks and walls. It's been said that the US Air Force use this to test their fighter pilots. If you can go longer than 37 seconds you are phenomenal. Give it a try but be careful...it's addictive!
Screenshots
Verdict
The clearest difference is rating: Poly Rules! at 4.8 against 37S's 4.0. Poly Rules! also leads on update cadence (monthly vs every 5 months) and ratings volume (13 vs 2). 37S's advantage is review sentiment (100% vs 80%). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
Poly Rules! holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: Poly Rules! has 13 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 80% of Poly Rules!'s written reviews are positive against 100% of 37S's, so the app with the better star average is not the one people write more warmly about.
Poly Rules! ships an update monthly, 37S every 5 months. The most recent releases landed on September 24, 2026 and October 16, 2026 respectively.
| Parameter | Poly Rules! | 37S |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (13 ratings) — better | 4.0 (2 ratings) |
| Positive reviews | 80.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 13 — better | 2 |
| Update frequency | Monthly — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 111 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Northeastern University Information Services | Andreii Simaranov |
Customer experience
Poly Rules!
37S
In-app purchases
Poly Rules!
No in-app purchases
37S
No in-app purchases
