# OELCHECK 4.0 vs Gemeinde Hollenbach

The clearest difference is update cadence: OELCHECK 4.0 at every 3 months against Gemeinde Hollenbach's every 20 months. Gemeinde Hollenbach's advantage is iOS requirement (13.0 vs 15.0). 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.

OELCHECK 4.0 ships an update every 3 months, Gemeinde Hollenbach every 20 months. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | OELCHECK 4.0 | Gemeinde Hollenbach |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 20 months |
| Monetization | Free | — |
| Size | 24 MB | 28 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [OELCHECK GmbH](https://appshunter.io/developer/1210793145) | [Gemeinde Hollenbach](https://appshunter.io/developer/1636678064) |

## What reviewers say

### OELCHECK 4.0

[App page](https://appshunter.io/ios/app/oelcheck-40/id1474067028)

Streamline lubricant and operating fluid sample management. Easily enter data, view lab reports, and manage machine information anytime, even offline. Optimize your analysis kits with this efficient digital tool.

**Highlights:** Sample data entry via QR code or machine search, Offline data entry and online synchronization, View sample status and lab reports, Attach up to five photos per sample, Manage machine data, Optimized analysis kit usage

**Features:** macOS Compatibility

**In-app purchases:** none


### Gemeinde Hollenbach

[App page](https://appshunter.io/ios/app/gemeinde-hollenbach/id1636678062)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OELCHECK 4.0 free?

OELCHECK 4.0 is free to download, with no in-app purchases.

### Is Gemeinde Hollenbach free?

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

### Do OELCHECK 4.0 or Gemeinde Hollenbach have ads?

Neither OELCHECK 4.0 nor Gemeinde Hollenbach shows ads.

### Which is updated more often, OELCHECK 4.0 or Gemeinde Hollenbach?

OELCHECK 4.0 ships an update every 3 months, and Gemeinde Hollenbach every 20 months. Most recently, OELCHECK 4.0 was updated on October 9, 2026 and Gemeinde Hollenbach on October 6, 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.*