# Maximum Externisti vs BOOM check

The clearest difference is iOS requirement: Maximum Externisti at 13.0 against BOOM check's 16.0. On price, update cadence, ads 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.

Maximum Externisti ships an update every 2 months, BOOM check every 3 months. The most recent releases landed on September 2, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Maximum Externisti | BOOM check |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Size | 60 MB | 63 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [AKIP Solutions s.r.o.](https://appshunter.io/developer/1591925338) | [BOOM Events s.r.o.](https://appshunter.io/developer/1634217037) |

## What reviewers say

### Maximum Externisti

[App page](https://appshunter.io/ios/app/maximum-externisti/id1591925336)

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

**In-app purchases:** none


### BOOM check

[App page](https://appshunter.io/ios/app/boom-check-in/id1634217035)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Maximum Externisti free?

Maximum Externisti is free to download, with no in-app purchases.

### Is BOOM check free?

BOOM check is free to download, with no in-app purchases.

### Do Maximum Externisti or BOOM check have ads?

Neither Maximum Externisti nor BOOM check shows ads.

### Which is updated more often, Maximum Externisti or BOOM check?

Maximum Externisti ships an update every 2 months, and BOOM check every 3 months. Most recently, Maximum Externisti was updated on September 2, 2026 and BOOM check on September 11, 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.*