# Dyslock vs Blind 20

The clearest difference is in-app purchases: Blind 20 at none against Dyslock's 3. Blind 20 also leads on update cadence (every 2 weeks vs every 5 weeks). Dyslock's advantage is review sentiment (100% vs 90%) and device support (3 vs 1). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Dyslock sells 3 one-off in-app purchases. Blind 20 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for Dyslock against 4.8 for Blind 20. Both are backed by a comparable volume of ratings — 70 and 24 respectively. Written reviews are what separate them: 100% of Dyslock's written reviews are positive against 90% of Blind 20's.

Dyslock ships an update every 5 weeks, Blind 20 every 2 weeks. The most recent releases landed on September 18, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Dyslock | Blind 20 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (70 ratings)](https://appshunter.io/ios/app/dyslock-crack-the-code/id1636561650/reviews) | [4.8 (24 ratings)](https://appshunter.io/ios/app/blind-20-number-challenge/id6451119689/reviews) |
| Number of ratings | **70** | 24 |
| Positive reviews | **100.0% of reviews** | 90.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 141 MB | 17 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dysphasion](https://appshunter.io/developer/1567207440) | [Scott Clark](https://appshunter.io/developer/1696654509) |

## What reviewers say

### Dyslock

[App page](https://appshunter.io/ios/app/dyslock-crack-the-code/id1636561650)

This logic puzzle game challenges you to crack unique codes using clues about your guesses. With over 2000 puzzles, multiple difficulty levels, and an intuitive note-taking system, it offers endless brain-training fun. Play daily challenges and compete on leaderboards.

**Highlights:** Over 2000 puzzles, 6 difficulty levels, Intuitive note-taking system, Play with digits, letters, colors, and more, Daily challenge with leaderboard, Intelligent hints

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |
| unlock all levels | $2.99 | one-time |
| Full game | $3.99 | one-time |


### Blind 20

[App page](https://appshunter.io/ios/app/blind-20-number-challenge/id6451119689)

Test your strategy and luck by sorting randomly generated numbers from 1 to 999, one at a time, into an ascending list of 20. Compete daily in live challenges against players worldwide and track your progress. Discover hidden secrets and share your achievements.

**Highlights:** Number sorting from 1 to 999, Daily live gaming challenges, Real-time global competition, Leaderboard rankings, Stats and achievements tracking, Intuitive interface, Hidden secrets

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Dyslock free?

Dyslock is free to download, with in-app purchases available.

### Is Blind 20 free?

Blind 20 is free to download, with no in-app purchases.

### Which has better reviews, Dyslock or Blind 20?

Dyslock and Blind 20 are both rated 4.8 out of 5 on the App Store, from 70 and 24 ratings respectively.

### Do Dyslock or Blind 20 have ads?

Both Dyslock and Blind 20 show ads.

### Which is updated more often, Dyslock or Blind 20?

Dyslock ships an update every 5 weeks, and Blind 20 every 2 weeks. Most recently, Dyslock was updated on September 18, 2026 and Blind 20 on June 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*