# WAIS vs Cortex Brain Trainer

The clearest difference is device support: WAIS at 3 against Cortex Brain Trainer's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. WAIS sells 1 in-app purchase, starting at $2.99 per month and Cortex Brain Trainer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

WAIS ships an update every 8 days, Cortex Brain Trainer weekly. The most recent releases landed on October 7, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | WAIS | Cortex Brain Trainer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Weekly** |
| Size | 10 MB | 46 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Burning Tribe](https://appshunter.io/developer/1888072646) | [Stephane de Barbanson](https://appshunter.io/developer/1876500326) |

## What reviewers say

### WAIS

[App page](https://appshunter.io/ios/app/wais-4/id6763717128)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WAIS4 プレミアム | $2.99 | per month |


### Cortex Brain Trainer

[App page](https://appshunter.io/ios/app/cortex-brain-trainer-n-back/id6775019270)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all games | $3.99 | one-time |


## Frequently asked questions

### Is WAIS free?

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

### Is Cortex Brain Trainer free?

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

### Do WAIS or Cortex Brain Trainer have ads?

Neither WAIS nor Cortex Brain Trainer shows ads.

### Which is updated more often, WAIS or Cortex Brain Trainer?

WAIS ships an update every 8 days, and Cortex Brain Trainer weekly. Most recently, WAIS was updated on October 7, 2026 and Cortex Brain Trainer on October 22, 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.*