[Zubersoft]

You definitely should be able to pinch-zoom any text or chord pro file. That is the same thing as accessing the text display settings under the popup at the top right (tap the A icon) and changing the text size for the entire file (using the "Simple" view). However, the spinning/lock up issue is definitely what I fixed with the upcoming version 3.8.7. I'll try to get this released as soon as possible. Sorry for the inconvenience in the meantime. We can revisit this once the update is available. It would also be helpful if you can send the .msf file just so I can test it out and verify everything is working as expected.

Thanks,
Mike