This is an excellent idea. No large arm movements. No admin side. Just for the users.
https://wordpress.org/plugins/androapp/
The app is made in 3 steps. Then you have the apk. 5 steps you have the app on google play.
This is my apk for monkeyempire site http://monkeyempire.net/downloads/monkeyempire.apk
It never harmed to get inspiration elsewhere, other than your wallet might get obese.