[simplex1]

I am looking for an WP8 app. that checks periodically the internet connection

I have a spare Nokia Lumia 520 which I want to leave in a building to check periodically the Wi-Fi internet connection existent there and record in a database each 15 minutes the status of the network: "internet accessible", "internet not available"

Is there such an application or something that can be used beside other things for the purpose I have described above?

[Pete]

There's an app called "Net Check" that appears to do what you want (in the Pro features).

[simplex1]

I installed Net Check Pro, at your suggestion, but this app does not appear to be able to do an internet test automatically each N minutes.

[Xellsama]

apps have restriction to run in the background on intervals of 30min, so if u r looking for 15 min it would not be possible.

[simplex1]

apps have restriction to run in the background on intervals of 30min, so if u r looking for 15 min it would not be possible.

A verification each 30 minutes will be acceptable if each 15 min. is not possible.