MobileTable-stakesAround since 2014
TestFlight
Also written as Beta Distribution, Internal Testing Track
Apple's system for distributing pre-release builds to testers before an app reaches the App Store. Google Play has equivalent testing tracks.
Think of it like
A preview screening for an invited audience before general release.
Junior or senior?
Baseline for anyone who has shipped an app. The signal is in their release process, not in naming the tool.
Ask them
“Walk me through how a change got from your machine to a real user's phone.”