Is a there a way to have my iPhone/iPad automatically download builds from Testflight as they become available?
I already automated the rest of the building process, and when I update a bunch of apps I feel kind of silly for having to go through the Testflight app (a webpage) and individually clicking all the apps I just updated and choosing to download them.
I would also like to know if there is such a solution for android.
If you want something that automatically downloads, installs, and updates builds. You'll want to go with a Mobile Device Management vendor; such as my product AppBlade.
We are given remote access to iOS/OSX devices via an API that Apple exposes to us; and installation can be triggered in browser or via APIS. On Android we have an AppStore application in beta.