App Uploads
Before you can automate mobile tests in CI, you need a simulator build to test against.
What you need to upload
TesterArmy currently supports iOS Simulator builds in one of these formats:
.app.zip.app.tar.gz
Simulator builds only
Do not upload an .ipa. That is a device build. TesterArmy needs a .app bundle built for iOS
Simulator.
Build for iOS Simulator
If you already have an Xcode project, build a simulator app with :

