I really dig Moment’s lens mounting system. People have tried lots of ways to mount third-party lenses on iPhones, and I haven’t been impressed with most of them. Clipped lenses fall off and misalign. Lenses that require you to stick or glue anything to your bare iPhone are just wrong as a matter of principle.
Moment has an iPhone case with mounting points embedded in them. In turn, the Moment lenses have screw threads at their base so you can just screw the appropriate lens into your Moment iPhone case. When you’re done with the shot, you can unscrew the lens and replace it with another or just keep the case on without the lens.
The cases are nice, but nothing amazing. When I was on vacation, I kept the Moment case on my iPhone 24/7 because I was constantly taking shots.
One of the best parts of this is that when Apple comes out with a new phone, you just need to buy the updated case, and your lenses will continue to work. That way, the most expensive parts, the glass, move forward with you to future iPhones. It’s an excellent solution.