Do I have to sign in to use the Lifetime app? No, you don't have to sign in to use the Lifetime app. There will always be lots to watch for viewers who don't sign in. Related articles How much does it cost to use the Lifetime app? What's the difference between watching while signed in and watching while not signed in? I don't have a TV package. Can I subscribe directly to Lifetime? I subscribe to YouTube TV. Can I watch Lifetime? Where do I get my TV provider information?