The need to match a particular font comes up fairly often in web development. There are a number of such apps/websites to help with this, the most well known of which is probably WhatTheFont [https://www.myfonts.com/pages/whatthefont/].

However, 90% of the time I don't care what font is used; what I really want is the closest free equivalent, preferably hosted on Google Fonts. I'd be interested to see if somebody could come up with an app that does this.