My older iPhone seems to have a tiny chip in the lens (by that I mean the external portion, which technically I guess is the lens cover). Photos have a purple flaw. Zoomed in, it actually looks like the profile of a tiny cockroach! I can remove this fairly well using the Photos app built-in repair tool, when it's against a regular background, like sky, concrete, fabric and the like. But I need a sharp edged repair tool for when it appears over sharp edges, like bridge support cables and the like. Otherwise, it blurs the sharp edges. Photography isn't really my thing, so I'm not looking to spring for Photoshop or the like. Other than cropping and adjusting color with the "magic" tool, I don't do much. Any suggestions though for sharp edged repair tool?