HTML5, CSS3, JavaScript for Android Apps

https://www.joshmorony.com/the-step-by-step-guide-to-publishing-a-html5-mobile-application-on-app-stores/

https://caniuse.com

https://ionicframework.com/

https://capacitor.ionicframework.com/docs/

https://ionicframework.com/docs/appflow/package/intro

https://build.phonegap.com/

http://docs.phonegap.com/en/edge/cordova_camera_camera.md.html

https://www.youtube.com/watch?v=Y1rD954ZyKA

https://www.youtube.com/watch?v=9J8AxhDxtTE

https://gdevelop-app.com/

https://hacks.mozilla.org/2014/10/creating-a-mobile-app-from-a-simple-html-site/

https://www.construct.net/en/tutorials/quick-app-android-app-apk-661

https://websitetoapk.com/download.html

https://github.com/crosswalk-project

https://github.com/phonegap/phonegap-plugin-fast-canvas

http://mrchay.com/projects/HTML5toAPK

https://developer.android.com/guide/webapps/index.html

https://cordova.apache.org/