I use habitica - and it suffers in a major way from the "tasks disappearing after you complete them" thing. I think that they disappear after 30 days if you don't pay for their membership, and after 90 days if you do. There's no "keep forever" option no matter how much money you give them.
I want to be able to see the list of things I've completed so I can analyze whether I'm successfully using the app for more life changing tasks like "apply to school" or more simple ones like "get milk."
I want to be able to see the list of things I've completed so I can analyze whether I'm successfully using the app for more life changing tasks like "apply to school" or more simple ones like "get milk."