Cryptarithms vs Brainrot
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Letter-to-digit substitution puzzles
- Logical reasoning challenges
- Arithmetic equality solving
- 90 unique cryptarithms
- Translations into 6 languages
Read full descriptionHide 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!
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.
- 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
Read full descriptionHide 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
Verdict
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
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.
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.
Cryptarithms ships an update every 41 months, Brainrot fortnightly. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.
| Parameter | Cryptarithms | Brainrot |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 41 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Freemium — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 7 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | Roman Koksharov | BOGDAN-GEORGIAN ALEXA |
Customer experience
Cryptarithms
Brainrot
In-app purchases
Cryptarithms
No in-app purchases
Brainrot
- Premium · Weekly$1.997 Days
- Mindback Premium$3.991 Month
- Premium · Quarterly$8.993 Months
Show 2 moreShow fewer
- Premium · 6 Months$14.996 Months
- 1 Year Premium Plan$19.991 Year
- One Time Payment - Lifetime Premium$39.99









