I've started using Headspace (#3 on this list) a few months ago. I have to confess that while I've started several months ago, I'm only at the 7th day meditation (out of 10 for the first level).
I've used to meditate everyday as a teenager. Now I can't amass the will to meditate every week. But I should.
I will write about my progression here to let you know what my experiences are with it. For the meantime I figured that some of you are interested in meditating and this list from motto.time.com is a good place to start.