✅ (free) – You can use its built-in browser, go to a YouTube-to-MP4 site (like y2mate or savefrom.net), and download the video to the app. Doesn’t require a newer iOS.
I’m still on an iPhone 6 with iOS 12, and most newer YouTube downloaders require iOS 13+. After testing a few, here’s what actually worked: youtube download ios 12
Here’s a for someone searching "YouTube download iOS 12" : Works on iOS 12 – but with limits ✅ (free) – You can use its built-in