I take a non traditional approach concerning the output itself. Rather than spitting back a sentence that is corrected, I chose to only show the incorrect words and their correct counterparts. This both creates an emphasis on the incorrect for easy use and reinforces the use of gender non-specific language (the ultimate goal) because the user must actually change the passage themselves after being informed.
I believe I have the largest list of gender specific language (as far as I can find). But given the freshness of this app, our database might be missing a few words. I urge the users to take advantage of the did I miss a word feature to help improve the app and by extension society.
By using the app you can
Educate yourself on the correct way to speak
Have another tool to fight prejudice and patriarchy
Understand what mistakes you are making, but also reinforce positive language use.