Before dissecting the "Mod APK" phenomenon, it is essential to understand the base product. YouTube TV is a premium streaming service offered by Google (a subsidiary of Alphabet Inc.). Unlike the standard YouTube app, YouTube TV is a live TV streaming service designed to replace traditional cable.
YouTube TV is a paid subscription service operated by Google. Any modified APK claiming to offer "Premium Unlocked" or "Pro" features is:
for YouTube Premium (ad-free standard YouTube) directly in the YouTube app under "Purchases and memberships" [ Google Help Carrier Promotions: Services like