Welcome and thank you for posting here in the Roku Community, @Roy66!
We appreciate you reaching out and we'd be even happier to assist you with this.
The Roku Smart Home app for Android is compatible with Android devices running Android version 7.0 or higher. Visit the Google Play store on your Android device or visit the online Google Play store to help you install it.
Let us know how it goes!
Best regards,
Carly
Carly Y.
Roku Community Moderator