I would definitely mention them, but not apply for positions that list them as requirements. During the interview you can mention that they were learned on your own time/projects.

That would mean more to me as an interviewer of your degree of interest and 'growth vector'.

It's so much easier to talk to someone who has used more than one language, framework, or operating system. Even if discussing something never seen before, it gives some context into how some things might be different and not assume that everything is/should be a certain way.