Comparison

GSM vs P+F Level

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

About

GSM

Features

Read full description

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.

About

P+F Level

Read full description

P+F Level App - The simple tool for wireless commissioning and status monitoring Due to the secure data transmission, it is the perfect tool for commissioning and maintenance. The connection via Bluetooth enables diagnostic and process information to be sent to the user's mobile device. Dangerous and difficult to access environments can thus be reliably monitored. Supported devices from P+F: • LCR10 • LCR20 • LVL-M4

Screenshots

GSM4 screens

P+F Level3 screens

Verdict

The call

The clearest difference is iOS requirement: GSM at 9.0 against P+F Level's 13.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

GSM ships an update every 4 months, P+F Level every 6 months. The most recent releases landed on November 11, 2026 and November 7, 2026 respectively.

Scorecard1 real difference · 5 level

GSM versus P+F Level: the parameters behind the verdict, then further details
Parameter	GSM	P+F Level
Price	Free	Free
Update frequency	Every 4 months — better	Every 6 months
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	9.0 — better	13.0
Further details — not scored
Size	7 MB	150 MB
Age rating	4+	4+
Developer	CONTA-CLIP Verbindungstechnik GmbH	Pepperl+Fuchs SE

In-app purchases

None

GSM

No in-app purchases

None

P+F Level

No in-app purchases

Questions

Is GSM free?

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

Is P+F Level free?

P+F Level is free to download, with no in-app purchases.

Do GSM or P+F Level have ads?

Neither GSM nor P+F Level shows ads.

Which is updated more often, GSM or P+F Level?

GSM ships an update every 4 months, and P+F Level every 6 months. Most recently, GSM was updated on November 11, 2026 and P+F Level on November 7, 2026.