It looks like the iPhone 4 is able to upgrade to the most recent version of iOS so it should work for testing as well as an iPhone 5. I’ve been able to find iPhone 4s’s on craigslist for $250-$300 but I haven’t purchased yet so I don’t know about quality.
From what I’ve read iPad SHOULD work just the same as iPhone. I think you’l only have problems with iPod if you don’t have the latest and greatest.
I’ve only just started so I don’t know if the guides I’ve read have the full story. But what I’ve been using-
Plugin for ionic:
cordova plugin add https://github.com/phonegap-build/PushPlugin.git
Guide to setting up Apple Developer “Membership” account with certs etc.
And of course- Google: A breath of fresh air
I’ll be using NodeJS for my server and haven’t gotten that far yet. Last couple of days have been spent working out the above.
If you get stuck let me know: micahwllmsn AT gmail DOT com