# OT Checker: Network Check — Local network diagnostics

> Local network diagnostics (iPhone/iPad app by Dominik Gausmann.)

- Source: https://appshunter.io/ios/app/ot-checker-network-check/id6810327165 (this page in markdown: same URL + `.md`)
- Developer: [Dominik Gausmann](https://appshunter.io/developer/1870320985)
- Category: Utilities, Developer Tools
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 28 MB
- Languages: Dutch, English, French, German, Italian, Spanish
- Released: 2026-09-14
- Data updated: 2026-10-11

## What is OT Checker?

OT Checker helps technicians inspect user-specified local IP addresses and private network ranges. Check common OT and industrial TCP services, identify active hosts, select ports, save targets and project profiles, compare scans, add device notes, and export compact reports.\n\nScans start only when requested and are intended for networks you own or maintain. Device names are shown when available. Premium unlocks custom port sets, project profiles, comparisons, notes, and export functions.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| OT Port Checker Premium | $3.99 | one-time |


## Is OT Checker safe?

Not enough ratings yet to assess OT Checker.

## Is OT Checker legit?

OT Checker: Network Check appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for OT Checker is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 4 releases)

### 1.0.3 — 2026-10-05

New in this version:\n• Detailed scan progress with host count, current IP and estimated remaining time\n• Search results by IP, device name, manufacturer, note or port\n• Save, name, pin and archive scans by project and target range\n• Improved scan comparisons and resumable interrupted scans\n• Enhanced PDF reports with company details, logo, cover page and sorting\n• IPv6 single-address checks and a compact safety onboarding

### 1.0.2 — 2026-09-20

New in this version:\n• Save, name, pin and archive scans by project and target range\n• Estimated device type and manufacturer detection for Premium\n• Improved scan comparisons with new or missing hosts and changed ports\n• Resume interrupted scans without checking completed hosts again\n• Enhanced PDF reports with company details, logo, cover page and sorting\n• More useful host details, notes and direct web interface access\n• IPv6 single-address checks and a compact safety onboarding

### 1.0.1 — 2026-09-16

-bugfixes Sprache

### 1.0 — 2026-09-14

No release notes.

## More apps by Dominik Gausmann

- [Würfly - Dice Score Sheet](https://appshunter.io/ios/app/wurfly-dice-score-sheet/id6758018932)
- [OT Subnet Calculator](https://appshunter.io/ios/app/ot-subnet-calculator/id6758581610)
- [Expiry - Expiration dates](https://appshunter.io/ios/app/expiry-expiration-dates/id6758586095)
- [MatchMoments](https://appshunter.io/ios/app/matchmoments/id6770105481)
- [Tap the Circle](https://appshunter.io/ios/app/tap-the-circle/id6770306077)
- [GolfTrackly](https://appshunter.io/ios/app/golftrackly/id6771446446)

All apps by Dominik Gausmann: https://appshunter.io/developer/1870320985

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-11.*