Instagram, Adobe Photoshop, GIMP, Adobe Photoshop Elements, Hipstamatic, Photoscape, Adobe Photoshop Express, Pixelmator, Snapseed, Pixlr, Polarr, Paper Camera, Pixelfed, Lo-Mob, Vignette, Picturesque, Glimpse Image Editor, Retro Camera, PicThx, Polaphoto, roidizer, Flare for Mac, Polamatic, picplz, SecureTribe are some alternatives to Polarfox.