I find myself in kind of the same case as you. I use a personal finance app on Android that I chose because it wasn't connected, so my data stays on the phone i

I find myself in kind of the same case as you. I use a personal finance app on Android that I chose because it wasn't connected, so my data stays on the phone if I don't manually save it elsewhere. 2 years ago I looked at the SqLite db with the project to build a desktop app that would use this db, but I didn't commit to it. Last week I wanted to finally build the app but I discovered that the developer had encrypted the db with AES256 in one of the previous updates. I plan on contacting him to see if I can convince him to give me a way to read my data but I'm afraid that if he won't do that or I would potentially have the key to all his users db.