# Probe Setup vs GROB⁴Line

The clearest difference is update cadence: GROB⁴Line at every 2 months against Probe Setup's every 5 months. Probe Setup'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.

Probe Setup ships an update every 5 months, GROB⁴Line every 2 months. The most recent releases landed on September 15, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Probe Setup | GROB⁴Line |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.2 (6 ratings)](https://appshunter.io/ios/app/probe-setup/id1045005309/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 82 MB | 16 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Renishaw plc](https://appshunter.io/developer/943016056) | [GROB-WERKE GmbH & Co. KG](https://appshunter.io/developer/1126270873) |

## What reviewers say

### Probe Setup

[App page](https://appshunter.io/ios/app/probe-setup/id1045005309)

This application guides users through the setup and configuration of Renishaw machine tool probes. It offers visual instructions and video tutorials for Trigger Logic™ or Opti-Logic™ compatible systems. It is intended for machine tool builders, OEMs, distributors, agents, and end users.

**Highlights:** Step-by-step visual instructions, Video tutorials, Configure Trigger Logic™ probes, Configure Opti-Logic™ probes, Renishaw probing system setup

**Features:** macOS Compatibility

**In-app purchases:** none


### GROB⁴Line

[App page](https://appshunter.io/ios/app/grobline/id1126270874)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Probe Setup free?

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

### Is GROB⁴Line free?

GROB⁴Line is free to download, with no in-app purchases.

### Do Probe Setup or GROB⁴Line have ads?

Neither Probe Setup nor GROB⁴Line shows ads.

### Which is updated more often, Probe Setup or GROB⁴Line?

Probe Setup ships an update every 5 months, and GROB⁴Line every 2 months. Most recently, Probe Setup was updated on September 15, 2026 and GROB⁴Line on September 7, 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.*