@igeljaeger@anime.website @VD15
I'm guessing this doesn't exist because the database would get too big. I guess it's gonna depend on how many features you'll want it to have, but just including cover pictures and character portraits will bloat the hell out of it.
I'm sure there is some way to get the data from anilist or myanimelist, and make it into an offline program, but I don't think it's gonna be worth the hassle. Which is probably why nobody did it.