if u r on the free plan then it's 100% offline and runs locally, if u upgrade to pro plan then it does send your words on the server where all the heavy processing happens and u get the correct word, and no I'm not storing your words.

and yes I didn't mention this in description bcz the privacy paragraph is already pretty big, you can read the privacy policy page though.

if u still don't believe on me then open the browser's network tab and enjoy.