Unlike Mozilla Stumbler, this app does not display the location of my recorded data, nor if it has any data to upload, nor any clue if it is running in the background (Mozilla Stumbler has a notification with counter). The notifications don't work (no notifications are shown if I tick the boxes). Whenever I try to upload data, the only notification that works is one that says I have nothing to upload. Even when I am in the middle of nowhere in a notspot with no buildings for miles, the app tells me there are 100 WiFi hotshots and 100 cell towers nearby. The speed test is quite useful.
Pluses and Minuses! After testing the lastest version of Open Signal, it seems more informative and accurate. However, a crucial drawback is, at random, the ability to efficiently know what towers the user is connected to with the line indicator as in the previous version is unstable. Sometimes it works, other times I have to manually decipher my phone connection. Also, Open Signal starts at boot and needlessly runs in the background.
A couple of fixes to make the current cell show more reliably.
(In other news: have you seen mysteryapp.opensignal.com ?)
Find & Connect to shared WiFi around the world. Free! youtu.be/NyiWXGtg2GI