Poly Rules! vs Saving Memo
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.
Saving Memo
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Saving Memo is a new way to test working memory. Your character works different jobs to feed your cat Memo. Each job challenges your memory in different ways where the more you remember the faster that you can get the job done. This program can help us understand how people use their memory in real world challenges.
Screenshots
Verdict
The clearest difference is update cadence: Poly Rules! at monthly against Saving Memo's every 50 months. On price, ads, in-app purchases and device support 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! ships an update monthly, Saving Memo every 50 months. The most recent releases landed on September 8, 2026 and May 16, 2026 respectively.
| Parameter | Poly Rules! | Saving Memo |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (13 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 13 — better | — |
| Update frequency | Monthly — better | Every 50 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 111 MB | 92 MB |
| Age rating | 4+ | 4+ |
| Developer | Northeastern University Information Services | University of California Riverside |
In-app purchases
Poly Rules!
No in-app purchases
Saving Memo
No in-app purchases









