# GROB⁴Line vs IMA Mobile

The clearest difference is update cadence: GROB⁴Line at every 2 months against IMA Mobile's every 16 months. IMA Mobile'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.

GROB⁴Line ships an update every 2 months, IMA Mobile every 16 months. The most recent releases landed on October 8, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | GROB⁴Line | IMA Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (5 ratings)](https://appshunter.io/ios/app/ima-mobile/id1438669620/reviews)** |
| Number of ratings | — | **5** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 16 months |
| Monetization | — | Free |
| Size | 16 MB | 9 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GROB-WERKE GmbH & Co. KG](https://appshunter.io/developer/1126270873) | [Mitsubishi Electric Automation, Inc.](https://appshunter.io/developer/1438669619) |

## What reviewers say

### GROB⁴Line

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

**Features:** Vision Pro support

**In-app purchases:** none


### IMA Mobile

[App page](https://appshunter.io/ios/app/ima-mobile/id1438669620)

Monitor your CNC machines in real-time from your mobile device. Receive instant notifications for alarms and status changes to ensure efficient and effective facility operations. This app supports the Industrial Internet of Things (IIoT) by providing universal connectivity through the MTConnect standard.

**Highlights:** Real-time CNC status monitoring, Instant alarm and status change notifications, MTConnect compliant connectivity, Supports 24/7 manufacturing operations, Improves Overall Equipment Efficiency (OEE), Increases machine usage

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GROB⁴Line free?

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

### Is IMA Mobile free?

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

### Do GROB⁴Line or IMA Mobile have ads?

Neither GROB⁴Line nor IMA Mobile shows ads.

### Which is updated more often, GROB⁴Line or IMA Mobile?

GROB⁴Line ships an update every 2 months, and IMA Mobile every 16 months. Most recently, GROB⁴Line was updated on October 8, 2026 and IMA Mobile on October 14, 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.*