The best alternatives to Filtron are Moment Filmmaker Collection, CSSGram, and CSSCO. If these 3 options don't work for you, we've listed a few more alternatives below.
We love to shoot video and we’ve always wanted gear that makes our phones as good as our big cameras. Today we have that...introducing the Moment Filmmaker Collection. An Anamorphic Lens, iPhoneX Battery Photo Case, Universal Counterweight, and Lens Filters.