'Click to Accurate' is awkward phrase.

Sorry, as a copywriter I can’t let things go sometimes: I realise this is not a priority, but when you open the app, a small speech bubble hovers over the location saying ‘Click to Accurate If Needed’ - since accurate is not a verb this jumps out at me. Maybe change to ‘Click If Inaccurate’ or ‘Click to Improve Accuracy’ or ‘Click to Adjust’ or ‘Click to Refine’ - something like that. Not trying to be a grammar Nazi or anything, but hope this is helpful. Great app, I actually use it when I proofread as anything else distracts me. Thanks muchly and great work :-)