how long do you test a new app before deciding to keep or delete it?

​I end up downloading or signing up for three to four new productivity apps every month. most of them look amazing on their product hunt page, but within two days I completely forget to open them again. The ones that stick are usually super simple and solve one exact problem without needing a two-hour setup process or a long onboarding tour.

​what is your rule of thumb when trying out new software? do you give it a full week, or do you know within ten minutes if it fits your workflow?