All this is for free.
This is a keyboard app.
Using it,
You can make various letters
like ᴸᵒᵛᵉᵧₒᵤ♥, ̶Z̶z̶z̶.̶.̶.̶ , pɹoʍ ɹnoʎ uɹnʇ
and share it anywhere
"Reddit", "Twitter", "Instagram" and so on.
This is not a font.
So you can use it anywhere.
Have a nice time~!