This is a fairly nice sounding lav mic for the price however I cannot give it a good review based upon some glaring negatives.
-It does not work with the industry-standard Zoom H4N or Zoom H6 audio recorders (with the Rode SC3 adapter). Useless.
-The smartphone app is $6.00 additional (although there is a limited free version). This gives a feeling that RÝde is trying to nickel and dime customers.
- The Rode SC3 TRRS to TRS adapter, which is not included is another $15.
- This mic sounds just okay, not great.
I also found this mic sounds a lot better with the wind screen off so I recommend you only use that if you have to. The windscreen made my voice sound quite thin.
For a mic going into your iPhone I guess it's fine, but for anything else, look elsewhere.
UPDATE: I much prefer the Giant Squid Audio Lab Omnidirectional Microphone
. It even works with the iPhone with Rode SC4 3 inches Microphone Cable
. It sounds way better than the SmartLav+ !