The best alternatives to Lens Distortions are Prisma, BeFunky, and Photo Editor by Aviary. If these 3 options don't work for you, we've listed a few more alternatives below.
BeFunky is a browser based photo editing and graphic design solution created to be powerful and easy to use. Say good bye to expensive, complicated software!
Powerful, user-friendly and globally accessible, Fotor is an online photo editing suite, utilizing exclusive technology to bring an unprecedented level of editing control to anyone and everyone.