Smart Receipts Pro - out of date
I don't know if it's intentional or not but the app Smart Receipts Pro on the F-Droid repo is version 3.3.3 while there is a new version 3.3.4 available here since April: https://github.com/wbaumann/SmartReceiptsLibrary/releases. It fixes an annoying bug which prevents to export data to csv. I don't really know how to help more since I didn't ever built an app on android. Thanks for the priceless project that F-Droid is.