I only downloaded for the same reason. I assumed this was somehow an app for making this font phone-wide (which would be spectacular), alas, it’s only within the app, and only on certain posts (for those who also used it). And I find the rest of the app rather useless - I’m a high functioning (when medicated) adhd-er and the app doesn’t help outside of this font. Sigh.

I believe it’s only used within the app for comments, stories, etc. I don’t think there is an actual tool.

Hi! You will find this new feature in the latest version of app :)

The whole reason I downloaded this app was the the text tool it advertises, but I don’t see it or any other tool like it? Help? 

How do I change text to match the ad?

They responded with this “Hi, it's called "Bionic reading"!
you can search the web for extensions to your browser or phone apps with this feature!”