We will assume you have an Android TV box or tablet running 4.4.2. You need to enable "Unknown Sources."
Since you cannot get this from the Play Store, you must enable sideloading.
Alternative safe mirror: APKMirror (search for Smart YouTube TV 10.20). Smart Youtube Tv Apk Android 4.4 2
Do not download from random APK websites — many inject adware into popular APKs.
Disable sponsored cards
Login to your YouTube account
Note: Two-factor authentication works fine. The app never sees your password. We will assume you have an Android TV
Since this is an unofficial app, do not contact Google. For help, visit:
If you encounter a bug on Android 4.4.2, specify your device model, ROM version, and logcat. The developer still appreciates legacy bug reports. Alternative safe mirror: APKMirror (search for Smart YouTube