https://github.com/whyboris/Video-Hub-App
I also sell it for $5 and have sold just over 5,000 copies last month (5 years old app). Importantly, $3.50 of every purchase goes to a cost-effective charity, GiveWell recommended Against Malaria Foundation (see website for details).
https://videohubapp.com/
I call this charityware and I wrote about it years ago: https://medium.com/@whyboris/charityware-doing-good-with-pro...