There is no automatic way to sync a Case File across multiple iPad devices, but you can easily backup and share Case Files. You can do this by setting up a TrialPad, TranscriptPad, or DocReviewPad Case File on one iPad and then sharing it with another iPad using a USB drive, or even using AirDrop to quickly and easily wirelessly move a Case File from one iPad to another.
TranscriptPad also has a new feature that allows users to share annotated transcripts with another user. Please see this blog post: https://www.litsoftware.com/blog/2021/6/2/transcriptpad-update-share-an-annotated-transcript-with-another-transcriptpad-user
Please make sure that your Document Storage is set to On My iPad for all the apps on both devices as described in the start of this video:
Then watch this video to see how to backup and share Case Files: