A good sounding & inexpensive lav mic for iPhone and most cameras?

I'm testing audio-technics's ATR3350iS lab mic. It comes with an adaptor to plug it into your iPhone but you can also us it with a audio recorder or plug it into your camera. It is only $19.99 at Amazon. Will it produce decent sound? What and decide.

Link to ATR3350iS:
http://www.amazon.com/Audio-Technica-ATR3350IS-Lavalier-Microphone-Smartphones/dp/B00HZA6EJO/ref=sr_1_1?ie=UTF8&qid=1446345338&sr=8-1&keywords=atr3350+lav+mic

Shot with:
iPhone 5c/Filmic Classic
Sound recorded with:
iPhone 5c/audio-technica ATR3350iS
Edited in:
FCPX

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