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
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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
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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 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 • With Premium, train fully offline • 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 FREE AND PREMIUM • Train free every day • Premium unlocks unlimited sessions 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 (every 3 weeks vs every 41 months). Cryptarithms's advantage is in-app purchases (none vs 3) 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 3 in-app purchases, starting at $3.99 per month. 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 every 3 weeks. The most recent releases landed on October 8, 2026 and October 4, 2026 respectively.
| Parameter | Cryptarithms | Brainrot |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Every 41 months | Every 3 weeks — 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 | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | Roman Koksharov | BOGDAN-GEORGIAN ALEXA |
Customer experience
Cryptarithms
Brainrot
In-app purchases
Cryptarithms
No in-app purchases
Brainrot
- Mindback Premium$3.991 Month
- 1 Year Premium Plan$19.991 Year
- One Time Payment - Lifetime Premium$19.99









