In build · Wave 3

PROSE

Write like you mean it. Privately.

$99one payment · iOS · macOS · Windows · Android
Join the waitlist← All Lodestar apps

An on-device writing assistant and system keyboard: grammar, clarity, rewrite and tone — with none of your text ever sent to a server.

Grammar & clarity fixes
Rewrite and adjust tone
A keyboard for every app
One licence, every device
The Lodestar difference

Where the category leader is Grammarly — rented, PROSE is bought once and runs on every one of your devices, with no subscription.