# FASTEC 4 PRO Mobile Client vs OWL Immo

The clearest difference is iOS requirement: OWL Immo at 12.0 against FASTEC 4 PRO Mobile Client's 14.2. 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.

FASTEC 4 PRO Mobile Client ships an update every 5 months, OWL Immo every 6 months. The most recent releases landed on October 11, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | FASTEC 4 PRO Mobile Client | OWL Immo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 6 months |
| Size | 76 MB | 33 MB |
| Requires iOS | 14.2 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [FASTEC GmbH](https://appshunter.io/developer/787083903) | [OWL Immobilien Verwaltung GmbH](https://appshunter.io/developer/1699533929) |

## What reviewers say

### FASTEC 4 PRO Mobile Client

[App page](https://appshunter.io/ios/app/fastec-4-pro-mobile-client/id972617776)

**In-app purchases:** none


### OWL Immo

[App page](https://appshunter.io/ios/app/owl-immo/id6453694820)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FASTEC 4 PRO Mobile Client free?

FASTEC 4 PRO Mobile Client is free to download, with no in-app purchases.

### Is OWL Immo free?

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

### Do FASTEC 4 PRO Mobile Client or OWL Immo have ads?

Neither FASTEC 4 PRO Mobile Client nor OWL Immo shows ads.

### Which is updated more often, FASTEC 4 PRO Mobile Client or OWL Immo?

FASTEC 4 PRO Mobile Client ships an update every 5 months, and OWL Immo every 6 months. Most recently, FASTEC 4 PRO Mobile Client was updated on October 11, 2026 and OWL Immo on October 1, 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.*