Use APKPure App
Get MarvCast old version APK for Android
MarvCast lets you cast your device media to your chromecast.
MarvCast lets you cast your media (photos, music and videos) from your phone or tablet to your chromecast or Android TV.
It also lets you cast videos from your pc. For that option to be available, you need a PC side app.
PC side app : http://bit.ly/2hWjK4D