It is the best wide angle lens for smartphone at the moment, period.
I have been reviewing smartphone lenses for a while and Zeiss ExoLens is definitely THE BEST on the market. I have a YouTube review (just search for Red35 Photography) and you can see some sample shots and how it look on both photos and videos.
The included bracket isn't the best as it doesn't work with phone cases and protector, so you will need a bare iPhone to work. However, there are other makes that uses the same screw mount, something like BitPlay cases/CLIP that will work with any cases/protector combination.
But the sheer quality of the lens, both optically and build, is out of this world. Definitely lives up to Zeiss name. By the way, I am a professional photographer!
Verified purchase: YesCondition: Pre-owned