I've been using this for a while and it's a great app with good support. Technical issues, which are rare, are typically addressed within a day. Definitely worth supporting financially.

***UPDATE 2020*** After a few years, I'm still supporting this excellent app, because it does what it's supposed to do and I use it frequently. Sometimes there are technical glitches, because YouTube likes to change its code, but the creators ALWAYS get it back up and running in no time. The tech support is just as good as the app itself. HIGHLY RECOMMENDED that you donate and support this app and its creators with only a few $$ for the PRO version. Totally worth it.