Just a quick heads up to tell you that you haven't been forgotten :-)
Unfortunately, my dev system had a really ugly crash (SSD controller lost it's firmware....eeeek!) and I lost my dev environment (so much for the backups that I did NOT think necessary :-). But now, I'm finally getting up to speed again and have restarted work on Recaller. I spent most of yesterday fixing the main issues:
- very quiet recordings
- hangs when using a folder containing one or more spaces
- hangs on anonymous calls
- hangs on calls containing a "*"
- autoswitch to bluetooth not working properly
Currently, there remains one large bug with BT to be fixed - the widget completely crashes after hanging up while on a headset. Once this is resolved, I will release a new version.

(Testing this is a nuisance - imagine calling yourself from another mobile 30 times a day...)