# Brain Boss vs The Fill Up

The clearest difference is in-app purchases: Brain Boss at none against The Fill Up's 1. Brain Boss also leads on rating (3.7 vs 3.3). The Fill Up's advantage is iOS requirement (9.0 vs 12.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. The Fill Up sells 1 one-off in-app purchase. Brain Boss asks for nothing beyond the download.

Brain Boss holds the better App Store score, 3.7 against 3.3. Both are backed by a comparable volume of ratings — 6 and 6 respectively.

## The numbers

| Metric | Brain Boss | The Fill Up |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (6 ratings)](https://appshunter.io/ios/app/brain-boss/id920372599/reviews)** | [3.3 (6 ratings)](https://appshunter.io/ios/app/the-fill-up/id1397666582/reviews) |
| Number of ratings | 6 | 6 |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | **Free** | Free with in-app purchases |
| Size | 70 MB | 31 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rise Up Labs](https://appshunter.io/developer/337502798) | [GammaLateral LLC](https://appshunter.io/developer/685178329) |

## 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


### The Fill Up

[App page](https://appshunter.io/ios/app/the-fill-up/id1397666582)

Tap to grow a square and release when you believe it matches the target shape's area. Challenge yourself to fill hundreds of unique shapes without overfilling.

**Highlights:** Tap to grow squares, Match shape areas, Hundreds of shapes, No overfilling challenge

**Features:** macOS Compatibility

**In-app purchases (1)**

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


## Frequently asked questions

### Is Brain Boss free?

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

### Is The Fill Up free?

The Fill Up is free to download, with in-app purchases available.

### Which has better reviews, Brain Boss or The Fill Up?

Brain Boss is rated higher. Brain Boss averages 3.7 out of 5 from 6 ratings, while The Fill Up averages 3.3 from 6 ratings.

### Do Brain Boss or The Fill Up have ads?

Neither Brain Boss nor The Fill Up shows ads.

---

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