# GSM-PRO2

> GSM-PRO2 (iPhone/iPad app by CONTA-CLIP Verbindungstechnik GmbH.)

- Source: https://appshunter.io/ios/app/gsm/id1176072366 (this page in markdown: same URL + `.md`)
- Developer: [CONTA-CLIP Verbindungstechnik GmbH](https://appshunter.io/developer/601327002)
- Category: Business, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 9.0 · 7 MB
- Languages: English
- Released: 2017-03-13
- Data updated: 2026-01-16
- User reviews in markdown: https://appshunter.io/ios/app/gsm/id1176072366/reviews.md

## What is GSM?

CONTA-CLIP‘s smartphone app for the GSM-PRO2 SMS relay provides a simple and fast solution to monitor and control one or more modules in the field. The app shows the status of all inputs and outputs of all connected GSM-PRO2 modules. Switch on your heater, fan or water pump simply by clicking a button. The app buttons provide intuitive control.
In combination with de GSM-PRO-GPS this app even shows very simple and clear the exact position of your device in the field.

This app offers you monitoring and control of multiple GSM-PRO2 modules in the field without knowing specific GSM-PRO SMS instructions.


## Version history (last 5 releases)

### 2.2.4 — 2019-01-09

Removed dialogs shown before and after sending SMS messages

### 2.2.2 — 2018-11-23

- Grouping of inputs and outputs for new modules
- One-shot functionality for GSM-PRO-4DO
- Status update via SMS for extensions with analog inputs or outputs
- Show timestamp fields on counter screen
- Changed iOS icon

### 2.1.2 — 2018-05-28

This version supports input, outputs, and extensions with single values.

### 2.1.1 — 2018-05-28

This version supports the new counter functionality of the GSM-PRO2 module.

### 2.0.2 — 2017-09-14

Added support for
- GSM-PRO2-E
- GSM-PRO2-8AI
- GSM-PRO2-4AO

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## More apps by CONTA-CLIP Verbindungstechnik GmbH

- [Conta-SuperVision](https://appshunter.io/ios/app/conta/id6463041641)

All apps by CONTA-CLIP Verbindungstechnik GmbH: https://appshunter.io/developer/601327002

## Related topics

[gsm2](https://appshunter.io/ios/topics/gsm2)

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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 2026-01-16.*