# DEKRA TACS4 vs OwnerChip

The clearest difference is update cadence: OwnerChip at every 3 weeks against DEKRA TACS4's every 5 weeks. DEKRA TACS4's advantage is iOS requirement (11.0 vs 17.6). On price, ads, 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.

DEKRA TACS4 ships an update every 5 weeks, OwnerChip every 3 weeks. The most recent releases landed on October 26, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | DEKRA TACS4 | OwnerChip |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Size | 30 MB | 42 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AT4 wireless S.A.](https://appshunter.io/developer/675014301) | [OwnerChip GmbH](https://appshunter.io/developer/1659737238) |

## What reviewers say

### DEKRA TACS4

[App page](https://appshunter.io/ios/app/dekra-tacs4-mobile/id780499424)

**Features:** macOS Compatibility

**In-app purchases:** none


### OwnerChip

[App page](https://appshunter.io/ios/app/ownerchip/id1666201715)

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

**In-app purchases:** none


## Frequently asked questions

### Is DEKRA TACS4 free?

DEKRA TACS4 is free to download, with no in-app purchases.

### Is OwnerChip free?

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

### Do DEKRA TACS4 or OwnerChip have ads?

Neither DEKRA TACS4 nor OwnerChip shows ads.

### Which is updated more often, DEKRA TACS4 or OwnerChip?

DEKRA TACS4 ships an update every 5 weeks, and OwnerChip every 3 weeks. Most recently, DEKRA TACS4 was updated on October 26, 2026 and OwnerChip 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.*