I need an app to alert me when my Android phone goes offline for over 15 minutes. I have an obligation to respond to certain requests within a short time frame and they come to my phone over the net.
All I could find on Google Play are primitive apps that are not configurable and frontends to websites that monitor servers for me. Since I'm interested in my connection more than in any server downtime, it's not what I'm looking for.
Must haves for me:
Ability to monitor a site without having to modify that site or set up a separate monitoring server.
Downtime notifications with a customized sound.
Don't alert me for the first missed connection, wait until the connection is not detected for a specific time. I don't want to scare everyone in the elevator when my WiFi and 4G go down for a minute.
It would be nice to have an option to override sound settings. Alerts are more important than phone calls for me when I'm on call.