TestFlight

Apple’s official beta testing platform for distributing pre-release iOS, iPadOS, macOS, tvOS, watchOS, and visionOS apps to up to 10,000 external testers.

TestFlight simplifies the entire beta testing pipeline by letting you invite up to 10,000 external testers using simple public links or direct email invitations. The platform handles internal QA builds for up to 100 team members, collects real-time crash reports, and gathers direct user feedback before you submit your app to the App Store. With support across iOS, iPadOS, macOS, tvOS, watchOS, and visionOS, it is the essential tool for polishing performance and squashing bugs at scale.

https://developer.apple.com/testflight/