Possible refund? Good app, just mistakenly bought this. – TI-84 CE Calculator Manual Review

This is a good app for what it is, yet not the app I was looking for. It is my fault for not reading the title more clearly before purchasing, but is there any possible way I could get a refund? Thank you for taking your time to read.
Review by Brandonnnnnnnnnnnnn on TI-84 CE Calculator Manual.