I just released an update to one of my apps that adds a typography library. Like you said font's are a very subtle thing and as I was converting my app I didn't

I just released an update to one of my apps that adds a typography library. Like you said font's are a very subtle thing and as I was converting my app I didn't notice that much. But after pushing the update and seeing the two versions (before and after the upgrade) side by side you see that proper typography can help make an app or a website look that much more "professional". The app before didn't look bad, but it had a sheen of "some guy built this in his basement". Now when I look at the app I get a "ok well a cash strapped startup built this"