Unfortunately for now there are not usable for me.
The 100MB storage limit feels ridiculous. ProtonMail offers 500MB basic with 1GB free upgrade, and ProtonDrive starts at 2GB up to 5GB free. It’s unclear why Standard Notes storage isn’t shared like these other Proton products.
Basic formatting tools like bold and italics are absent on free plan. What makes it different from notes in Proton Pass?
Jurisdictional troubles. It is not Swiss as Proton or SimpleLogin
P.S: Their app looks like PWA (progressive web application) not as standalone app.