I bought this mic almost as an aside and have been incredibly glad that I did. Having the ability to connect a good lav mic to your smartphone phone in a pinch has saved me on several occasions. Like they say about cameras, the best one is the one you have with you.
If you get this mic, be sure to get the minifur as well for use outdoors.
One thing to be mindful of, if you want to use it with trs devices you'll need to get an adapter cable (rode SC-3).
The only downsides are the clip, which can be fiddly. Also the cable could've been a bit longer, but you can easily buy an extension if needed.
By no means perfect but it is excellent value, and for that one time you need it in an emergency, it's priceless.