Is it is legal to make crypto earning app?

[Janidu (Janidu Bimsara)]

Hey koders,
I want to make crypto earning app.Is it is legal to make crypto earning app?

[Gareeb_bhai (Premium User)]

I already made one but useless

[Janidu (Janidu Bimsara)]

Oh why what happened? Can you send me screenshots.Is it is in playstore?

[HAKANKOKCU (‎Hakan)]

i think no

[Janidu (Janidu Bimsara)]

Why any reason?