Mobile Client on IOS (iPhone)

I was looking to download the Mobile Client app for the iPhone (IOS) when I found that I have to sign up for the Apple Developer Enterprise Program at $299 per annum. I am looking to test an existing application on an iphone and am not looking to sign up to the Apple program, as we may decide within minutes that this is not a route we want to go down. Do I really need to sign up to this before PTS will provide the IOS Client software?
 
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