Here is another idea i had yesterday. Setup a weekly list and set a price when you're failing to complete this list. Add a mentor or buddy and chat with him in the app. You're the mentor of him and he of you. Switch between mentor mode and work mode.
At the end of the week the mentor evaluates if you got these things done and has the proof chat as help.
When you pass nothing happens, when you fail you will be charged the amount you setup before.