Before general release.
WHAT TESTING DISTRIBUTION PROVIDES
Releasing to selected users before production.
WHAT TRACKS EXIST
Internal, for the team Closed, for invited testers Open, for anyone who joins
WHAT TO USE EACH FOR
Internal for every build Closed for a representative group Open where you want volume
WHAT TO RECRUIT
Users resembling your actual audience, on the devices they actually have.
WHAT TO ASK THEM
Specific questions about specific tasks.
WHY
"Any feedback?" produces nothing useful.
WHAT TO PROVIDE
A simple way to report problems, inside the application Clear instructions on what to try
WHAT TO COLLECT AUTOMATICALLY
Crashes Which paths people complete and abandon
WHY THAT SECOND POINT
Testers rarely report abandoning something; they simply stop.
WHAT TO WATCH FOR
Confusion about what to do next Features nobody finds Steps where people stop
WHAT TO DO WITH FEEDBACK
Categorise it, and act on what recurs.
WHAT NOT TO DO
Treat a single opinion as representative.