It can tell you whether or not your Internet connection is active. – Wi-Fi SweetSpots Review

I use this smartphone productivity app to measure the strength of my Internet connection whether it be at home, work, school, or abroad. It definitely performs its main function quite well although sometimes I have issues with this app. The only way you'll know if this app floats your boat is if you test it out just like I did awhile ago.
Review by 7Kevins on Wi-Fi SweetSpots.