I'm not sure if these are outliers, and my "random" sampling is just picking out highly visible apps. But I've made good money off an app built in a month, and I've made relatively little from a book written in 3 months.
Software has a lot more variety. You can make say, a communist themed productivity app vs a forest themed one and these will appeal to different people.
And this at almost a million dollars: https://play.google.com/store/apps/details?id=com.modelmaker...
I'm not sure if these are outliers, and my "random" sampling is just picking out highly visible apps. But I've made good money off an app built in a month, and I've made relatively little from a book written in 3 months.
Software has a lot more variety. You can make say, a communist themed productivity app vs a forest themed one and these will appeal to different people.