Hi @prockkids,
Welcome to the Roku Community!
The Roku app for Android is compatible with Android devices running Android version 5.0 or higher. Visit the Google Play store on your Android device, or visit the online Google Play store to download the Roku mobile app for Android.
For full information on this, you can take a look at this link: How do I install the Roku® mobile app? | Official Roku Support
Let me know if you have any other questions, and have a good day!
Many thanks,
Mary
Mary F.
Roku Community Moderator