# INTspector vs OELCHECK 4.0

The clearest difference is iOS requirement: INTspector at 12.2 against OELCHECK 4.0's 15.0. 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.

INTspector ships an update every 4 months, OELCHECK 4.0 every 3 months. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | INTspector | OELCHECK 4.0 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 151 MB | 24 MB |
| Requires iOS | **12.2** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KRIWAN Industrie-Elektronik GmbH](https://appshunter.io/developer/1313794395) | [OELCHECK GmbH](https://appshunter.io/developer/1210793145) |

## What reviewers say

### INTspector

[App page](https://appshunter.io/ios/app/intspector/id1313794396)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is INTspector free?

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

### Is OELCHECK 4.0 free?

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

### Do INTspector or OELCHECK 4.0 have ads?

Neither INTspector nor OELCHECK 4.0 shows ads.

### Which is updated more often, INTspector or OELCHECK 4.0?

INTspector ships an update every 4 months, and OELCHECK 4.0 every 3 months. Most recently, INTspector was updated on October 6, 2026 and OELCHECK 4.0 on October 9, 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.*