I’m on my phone
depends on what OS your phone runs on. If you're on android, download the file that ends with apk, you may need an apk opener app. If you're on apple, download the file that ends with app.zip, i don't know if you would need some sort of file opener, since i haven't used apple in a couple years.
Also, i'm not a developer, so i don't know why you're asking me the questions.