I love the game, thanks a lot for making it!
However, I had an issue when updating from 0.4.12 to 0.4.18 on Android:
The app name changed from "Course of Temptation" to "CoT" (which is less awkward if someone checks your phone so it's a good change). Because of this, I suppose, it didn't replace the old app so both versions were installed. I promptly uninstalled the old version and realized too late that it wiped all my saves before I transferred them to the new version.
I tried reinstalling the old version and, fortunately, it somehow managed to find some saves that were created within the last 24h. Those were not my most recent saves so I'm confused where they came from, maybe some automatic backup on my phone. Anyway, I'm saved but that was close.
I'm sharing this in case it happens to someone else. Putting a warning somewhere to always backup your saves before updating might be useful too.