Overall this is an excellent higher-end accessory to improve photo and video. It does exactly what a polarizer needs to do.
Fits well on both an iPhone 12 Pro and an iPhone 15 Pro. It's rather heavy so feels less balanced on the smaller phone.
Nice carrying case - it isn't something you'd leave on the phone all the time. Because it's a 67mm size, it doesn't create vignetting when using the ultra wide lens.
It's a bit stiff on rotation, but may smooth out over time. Overall glad to have it for upgraded personal and professional (I handle a lot of content creation in my job) use.

This K&F Concept Clip-On 67mm CPL Magnetic Phone Lens Filter Kit is very easy to use and fits over my iPhone camera perfectly. However, it may not work for other phones with different camera configurations. The filter does help significantly reduce harsh reflections, but I’m not very impressed with its ability to deepen and enrich blue skies. It comes in a nice protective case with a microfiber lens wipe as well. Unfortunately, this is not a rotating circular polarizer like the ones they make for DSLR cameras. On the plus side, it does have a magnetic mount, so it’s easy to adjust and swap out with other filters as needed.

This has been by far the best camera I have used so far. The rotation is a game changer.

I ordered the magnetic phone camera lens kit for my iPhone because I like to take videos and photos. The product quality is very high and it is easy to install.

The kit works exactly as expected and delivers much better results. I can only recommend it.

This is a great accessory for my camera. It's easy to use and helps up the quality of my work.

This has been by far the best camera I have used so far. The rotation is a game changer.

I used this with the snake camera. Worked great

Quality best inspection camera I ever own.