# Confare #ImpactChallenge vs Bilfinger Check

The clearest difference is iOS requirement: Confare #ImpactChallenge at 12.0 against Bilfinger 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.

Confare #ImpactChallenge ships an update fortnightly, Bilfinger Check every 3 weeks. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Confare #ImpactChallenge | Bilfinger Check |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Size | 24 MB | 60 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Confare GmbH](https://appshunter.io/developer/1461489248) | [Bilfinger Engineering & Maintenance GmbH](https://appshunter.io/developer/1481465277) |

## What reviewers say

### Confare #ImpactChallenge

[App page](https://appshunter.io/ios/app/confare-impactchallenge/id1625059733)

**Features:** macOS Compatibility

**In-app purchases:** none


### Bilfinger Check

[App page](https://appshunter.io/ios/app/bilfinger-check/id6448447178)

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

**In-app purchases:** none


## Frequently asked questions

### Is Confare #ImpactChallenge free?

Confare #ImpactChallenge is free to download, with no in-app purchases.

### Is Bilfinger Check free?

Bilfinger Check is free to download, with no in-app purchases.

### Do Confare #ImpactChallenge or Bilfinger Check have ads?

Neither Confare #ImpactChallenge nor Bilfinger Check shows ads.

### Which is updated more often, Confare #ImpactChallenge or Bilfinger Check?

Confare #ImpactChallenge ships an update fortnightly, and Bilfinger Check every 3 weeks. Most recently, Confare #ImpactChallenge was updated on November 7, 2026 and Bilfinger Check on November 3, 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.*