Hi Ghost King!
Thanks for writing! Yes, of course the .ap file is not good for exchanging your work with other people (who don’t use Animation Paper) or for other software. The .ap file format is optimal way to save and load for AP.
To export you will of course be able to export in mp4 and mov – this is one of the things still missing before AP is finished – we are working on it, and it will come soon in one of the next alpha releases.
For now, you can export as a sequence of png’s – and then use some other software to convert them to a movie file. Plenty to chose from, like various compositing software, including free ones.