# Ace Brain vs Sigma Fall

The clearest difference is in-app purchases: Sigma Fall at none against Ace Brain's 1. Sigma Fall also leads on update cadence (weekly vs every 6 months). Ace Brain's advantage is iOS requirement (10.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. Ace Brain sells 1 one-off in-app purchase. Sigma Fall asks for nothing beyond the download.

Ace Brain ships an update every 6 months, Sigma Fall weekly. The most recent releases landed on October 7, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Ace Brain | Sigma Fall |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/ace-brain/id1113917622/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 70.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 85 MB | 44 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SIGMA ISLETIM VE ULASTIRMA SANAYI VE TICARET LIMITED SIRKETI](https://appshunter.io/developer/1342520369) | [Samim Baydar](https://appshunter.io/developer/1868676225) |

## What reviewers say

### Ace Brain

[App page](https://appshunter.io/ios/app/ace-brain/id1113917622)

Enhance your memory, concentration, and cognitive abilities with this brain training game. Memorize card sequences and test your recall through progressively challenging levels. Regular play can lead to noticeable improvements in cognitive function.

**Highlights:** Memory training, Concentration improvement, Cognitive skill enhancement, Visual memory training, Process speed training, Endless levels

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |


### Sigma Fall

[App page](https://appshunter.io/ios/app/sigma-fall-math-game/id6757752252)

**In-app purchases:** none


## Frequently asked questions

### Is Ace Brain free?

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

### Is Sigma Fall free?

Sigma Fall is free to download, with no in-app purchases.

### Do Ace Brain or Sigma Fall have ads?

Neither Ace Brain nor Sigma Fall shows ads.

### Which is updated more often, Ace Brain or Sigma Fall?

Ace Brain ships an update every 6 months, and Sigma Fall weekly. Most recently, Ace Brain was updated on October 7, 2026 and Sigma Fall on October 2, 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.*