I know previously you said it wasn't possible to go back to a prior version of the note caddy app, but could you add a second APP called "NoteCady Beta"?
The stable version and the Beta version should have completely separate data, but perhaps have a transfer option in settings that lets you transfer the data from one version to the other. If absolutely necessary, they could even have separate column/statistic/etc. names, though if possible it would obviously be better to only allow one version to run at a time and use the same names.
That way when there are changes they can be vetted in the beta channel before being released to the stable channel.
When the beta channel updates, we can just disable the release app and enable the beta app, try it out, and report the results. When the app is stable, it can be transferred to the stable channel.
Note caddy is such an amazing product, but the instability makes it frustrating to use. Adding a second app could fix this without requiring any changes to Poker Tracker.