# Lexicon Delta vs Brain Challenge

The clearest difference is ads: Brain Challenge at none against Lexicon Delta's shown. Brain Challenge also leads on ratings volume (26 vs 2) and monetization model (free vs ad-supported). On price, rating, review sentiment and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.5 for Lexicon Delta against 4.5 for Brain Challenge. That said, the two scores are not equally well evidenced: Brain Challenge has 26 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 80% of Lexicon Delta's written reviews are positive against 75% of Brain Challenge's.

Lexicon Delta ships an update every 4 months, Brain Challenge every 2 months. Both last shipped on September 29, 2026.

## The numbers

| Metric | Lexicon Delta | Brain Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/lexicon-delta/id597293776/reviews) | [4.5 (26 ratings)](https://appshunter.io/ios/app/brain-challenge-code-breaker/id989529469/reviews) |
| Number of ratings | 2 | **26** |
| Positive reviews | **80.0% of reviews** | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Ad-supported | **Free** |
| Size | 60 MB | 6 MB |
| Requires iOS | 15.6 | **6.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nestor Borgo](https://appshunter.io/developer/478653152) | [ARAPPDEV](https://appshunter.io/developer/879077351) |

## What reviewers say

### Lexicon Delta

[App page](https://appshunter.io/ios/app/lexicon-delta/id597293776)

Test your vocabulary in this classic word game by composing words from letters on a grid. Each letter can be used a limited number of times. Compete with friends or challenge yourself across multiple game modes and leaderboards.

**Highlights:** Word composition from letter grid, Limited letter usage, 3 game modes, 11 leaderboards, 25 achievements, 17 playing languages, Official Scrabble® vocabularies

**In-app purchases:** none


### Brain Challenge

[App page](https://appshunter.io/ios/app/brain-challenge-code-breaker/id989529469)

Test your visual and auditory memory by re-entering increasingly longer codes. This addictive game challenges your recall with a unique nine-digit keyboard.

**Highlights:** Visual and auditory memory challenge, Increasingly longer codes, Score based on speed, Unique nine-digit keyboard, Addictive gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Lexicon Delta free?

Lexicon Delta is free to download, with no in-app purchases.

### Is Brain Challenge free?

Brain Challenge is free to download, with no in-app purchases.

### Which has better reviews, Lexicon Delta or Brain Challenge?

Lexicon Delta and Brain Challenge are both rated 4.5 out of 5 on the App Store, from 2 and 26 ratings respectively.

### Do Lexicon Delta or Brain Challenge have ads?

Lexicon Delta shows ads; Brain Challenge does not.

### Which is updated more often, Lexicon Delta or Brain Challenge?

Lexicon Delta ships an update every 4 months, and Brain Challenge every 2 months. Most recently, Lexicon Delta was updated on September 29, 2026 and Brain Challenge on September 29, 2026.

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