Comparison

Cryptarithms vs Brainrot

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

Head to head
About

Cryptarithms

Solve challenging mathematical puzzles where letters represent digits in arithmetic equations. This app offers 90 cryptarithms with translations into six languages, requiring only basic math and logical reasoning skills.

Highlights
  • Letter-to-digit substitution puzzles
  • Logical reasoning challenges
  • Arithmetic equality solving
  • 90 unique cryptarithms
  • Translations into 6 languages
Features
Read full description

The ability to sum numbers and perform logical reasoning are the only skills required for solving cryptarithms. Nevertheless, these puzzles are often witty and challenging to solve. A cryptarithm is a mathematical puzzle where digits in an arithmetic equality are replaced by letters. It is defined so that distinct letters correspond to distinct digits. Moreover, when the letters are converted back by the original digits, the resulting equality must be valid. The problem is to find the original digits. 90 сryptarithms with their translations to 6 languages are presented. Enjoy!

About

Brainrot

This app offers focused N-Back training games designed to improve memory and concentration. It provides a distraction-free environment with various stimuli and adaptive difficulty levels to rebuild focus.

Highlights
  • Dual N-Back focus training
  • Multiple stimuli types (numbers, letters, sounds, shapes, colors)
  • Adaptive difficulty levels
  • Offline training with Premium
  • Keyboard shortcuts for Mac
  • Progress tracking and history
  • Distraction-free interface
Features
Read full description

Call it brainrot: that feeling after an hour of short videos, when a single thought won't stay put. Your attention isn't broken — it's just out of practice. This is the gym for it. Brainrot is a focused N-Back trainer — brain games for memory and concentration, built on one of the most widely used working-memory tasks in cognitive science research. No feeds, no ads, no dopamine slot machine — just you and one demanding task, one rep at a time. 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 • N from 1 to 7, on a 1x3 or 3x3 grid • Mix visual and audio streams freely — 230+ combinations • Optional auto-adjust: N rises or drops by thresholds you set • Two separate audio streams at once, one per ear — put your headphones on for a true dual-sound challenge • A How to Play guide for every mode ON MAC, IPAD AND IPHONE — BUILT FOR THE KEYBOARD • Runs on Mac, iPad, and iPhone — train on the big screen at your desk • Full hardware-keyboard play on iPad and Mac: 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 every press, with optional haptics on a wrong match • Session results after every round • Current and best streak, on a training calendar • Full training history, with the accuracy of every session BUILT TO RESPECT YOUR FOCUS • Zero ads. Ever. • Clean, distraction-free interface • Light, dark, and auto themes • Training history synced via iCloud across your Apple devices; settings restored on a new install • Available in 12 languages • Portrait and landscape on iPad FREE AND PREMIUM • Free: 3 sessions every day (an internet connection is needed to start them) • Premium: unlimited sessions, a daily session goal, and fully offline training 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. Missing a feature? Write to me from Settings in the app. Focus is a skill. Train it. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Cryptarithms3 screens
Brainrot4 screens

Verdict

The call

The clearest difference is price: Brainrot at Free against Cryptarithms's $1.99. Brainrot also leads on update cadence (fortnightly vs every 41 months). Cryptarithms's advantage is in-app purchases (none vs 6) and iOS requirement (12.0 vs 16.4). On rating, ratings volume, 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

Brainrot is free to download; Cryptarithms costs $1.99 up front. Brainrot sells 6 in-app purchases, starting at $1.99 per 7 days. Cryptarithms asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Cryptarithms against 5.0 for Brainrot. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Cryptarithms ships an update every 41 months, Brainrot fortnightly. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

Scorecard5 real differences · 5 level
Cryptarithms versus Brainrot: the parameters behind the verdict, then further details
ParameterCryptarithmsBrainrot
Price$1.99Free — better
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews—100.0% of reviews
Number of ratings11
Update frequencyEvery 41 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.4
Further details — not scored
Size7 MB56 MB
Age rating4+4+
DeveloperRoman KoksharovBOGDAN-GEORGIAN ALEXA

Customer experience

Cryptarithms

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Brainrot

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Cryptarithms

No in-app purchases

6 purchases

Brainrot

Subscriptions5
  • Premium · Weekly$1.997 Days
  • Mindback Premium$3.991 Month
  • Premium · Quarterly$8.993 Months
Show 2 more
  • Premium · 6 Months$14.996 Months
  • 1 Year Premium Plan$19.991 Year
One-time1
  • One Time Payment - Lifetime Premium$39.99

Questions

Is Cryptarithms free?
Cryptarithms costs $1.99, with no in-app purchases.
Is Brainrot free?
Brainrot is free to download, with in-app purchases available.
Which has better reviews, Cryptarithms or Brainrot?
Cryptarithms and Brainrot are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Cryptarithms or Brainrot have ads?
Neither Cryptarithms nor Brainrot shows ads.
Which is updated more often, Cryptarithms or Brainrot?
Cryptarithms ships an update every 41 months, and Brainrot fortnightly. Most recently, Cryptarithms was updated on November 1, 2026 and Brainrot on November 6, 2026.

Other comparisons