Comparison

Poly Rules! vs Brainrot

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Dynamic rule changes
  • Increasingly complex scenarios
  • Cognitive benefit focus
  • Research support available
  • Log storage and analytics (coming soon)
Features
Read full description

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.

About

Brainrot

Features
Read full description

Your attention isn't broken — it's just out of practice. This is the gym for it. Brainrot is a focused N-Back trainer built on the most studied working memory task in cognitive science. No feeds, no ads, no dopamine slot machine — just you and the rep that rebuilds your concentration. HOW IT WORKS You watch a stream of stimuli and respond when the current one matches what appeared N steps earlier. In 2-back, you match the item from two steps ago. Simple to learn, genuinely demanding to hold — and that gap is where working memory gets trained. ONE TASK, ENDLESS DEPTH • Single, Dual, Triple, and Quad N-Back (1 to 4 streams at once) • Stimuli: numbers, letters, sounds, shapes, colors, grid cell position • 1x3 and 3x3 grid patterns • Mix visual and audio streams freely — 150+ combinations • Adaptive N-level that raises and lowers difficulty according to rules you customize • Two separate audio streams at once, one per ear — put your headphones on for a true dual-sound challenge NOW ON MAC — AND BUILT FOR THE KEYBOARD • Runs on Mac, iPad, and iPhone — train on the big screen at your desk • Full hardware-keyboard play: press Space to start or stop, and H / J / K / L to answer each stream • A built-in Keyboard Shortcuts guide keeps every key one glance away • Ideal for fast, heads-down Quad sessions — hands on the keys, eyes on the streams TRACK REAL PROGRESS • Per-stream scoring: correct, missed, incorrect • Instant feedback on wrong taps, with optional haptics • Session results after every round • Daily goals to keep the habit • Full training history BUILT TO RESPECT YOUR FOCUS • Fully offline — train anywhere, no connection needed • Zero ads. Ever. • Clean, distraction-free interface • Light, dark, and auto themes • iCloud sync for settings and history across your Apple devices • Available in 12 languages • Full tablet, Mac, and landscape support THE HONEST PART N-Back is real cognitive training, not a magic pill. We don't promise IQ points or medical outcomes. It's a serious, well-built tool — the results come from showing up and doing the reps. Put the phone to work for once. Start with Single N-Back, then build toward Quad at your pace. If you want a particular feature please reach out. Focus is a skill. Train it. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Poly Rules!4 screens
Brainrot4 screens

Verdict

The call

The clearest difference is in-app purchases: Poly Rules! at none against Brainrot's 3. Poly Rules! also leads on iOS requirement (12.0 vs 15.1). Brainrot's advantage is update cadence (every 2 weeks vs monthly). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Brainrot sells 3 in-app purchases, starting at $3.99 per month. Poly Rules! asks for nothing beyond the download.

UpkeepUpdate frequency

Poly Rules! ships an update monthly, Brainrot every 2 weeks. The most recent releases landed on September 8, 2026 and September 18, 2026 respectively.

Scorecard3 real differences · 7 level
Poly Rules! versus Brainrot: the parameters behind the verdict, then further details
ParameterPoly Rules!Brainrot
PriceFreeFree
Rating4.8 (13 ratings) — better—
Positive reviews80.0% of reviews—
Number of ratings13 — better—
Update frequencyMonthlyEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.1
Further details — not scored
Size111 MB49 MB
Age rating4+4+
DeveloperNortheastern University Information ServicesBOGDAN-GEORGIAN ALEXA

In-app purchases

None

Poly Rules!

No in-app purchases

3 purchases

Brainrot

Subscriptions2
  • Mindback Premium$3.991 Month
  • 1 Year Premium Plan$19.991 Year
One-time1
  • One Time Payment - Lifetime Premium$19.99

Questions

Is Poly Rules! free?
Poly Rules! is free to download, with no in-app purchases.
Is Brainrot free?
Brainrot is free to download, with in-app purchases available.
Do Poly Rules! or Brainrot have ads?
Neither Poly Rules! nor Brainrot shows ads.
Which is updated more often, Poly Rules! or Brainrot?
Poly Rules! ships an update monthly, and Brainrot every 2 weeks. Most recently, Poly Rules! was updated on September 8, 2026 and Brainrot on September 18, 2026.

Other comparisons