Is there a website describing TI Nspire platforms?

[thenozone]

There is an TI produced app on the apple store, for the TI N-Spire CXII Cas, but it is £29.99, in the UK, I have the Actual TI N-spire CX II T- Cas, but cant figure out how to get the images for the firebird app. I think they also do the Non Cas version slightly less expensive.
If you are looking to try python TI only support it in the CX II versions ( not sure if supported in apple product).