# Brain Boss vs Card Stack

The clearest difference is ads: Brain Boss at none against Card Stack's shown. Brain Boss also leads on iOS requirement (12.0 vs 15.0). Card Stack's advantage is update cadence (every 3 days vs every 3 months). On price, in-app purchases and device support there is nothing between them.

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

Brain Boss ships an update every 3 months, Card Stack every 3 days. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Brain Boss | Card Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (6 ratings)](https://appshunter.io/ios/app/brain-boss/id920372599/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 70 MB | 127 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rise Up Labs](https://appshunter.io/developer/337502798) | [Furkan Savas](https://appshunter.io/developer/1840487666) |

## What reviewers say

### Brain Boss

[App page](https://appshunter.io/ios/app/brain-boss/id920372599)

This game challenges your brain with a fast-paced color and number matching mechanic. It's designed to improve memory and coordination by requiring precise taps within a time limit. Compete with others to see how your brain stacks up.

**Highlights:** Color and number matching gameplay, Tests brain workout skills, Improves memory skills, Scientifically designed challenges, Fast-paced and challenging, Minimalistic UI, Compares coordination against others

**Features:** macOS Compatibility

**In-app purchases:** none


### Card Stack

[App page](https://appshunter.io/ios/app/card-stack-up-or-down/id6782604201)

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

**In-app purchases:** none


## Frequently asked questions

### Is Brain Boss free?

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

### Is Card Stack free?

Card Stack is free to download, with no in-app purchases.

### Do Brain Boss or Card Stack have ads?

Card Stack shows ads; Brain Boss does not.

### Which is updated more often, Brain Boss or Card Stack?

Brain Boss ships an update every 3 months, and Card Stack every 3 days. Most recently, Brain Boss was updated on November 1, 2026 and Card Stack on October 31, 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.*