A notes taking app for students has to survive three things: a lecture hall with no Wi‑Fi, a shared laptop, and four years of everything you ever wrote. The apps most students start with are free, and free is paid for with your data. Your study habits, your interests and your struggles are exactly the kind of signal an advertising company or an AI lab wants.
Dash takes the other approach. Notes are files on your Mac or iPhone. There is no account, so there is no record of you to sell or leak. Anything sensitive gets a password and real encryption. And the Mac app is a one-time purchase, which is cheaper than a month of most subscriptions.