Supernotes is an online note-taking platform that organizes ideas and information into small “notecards”. Each card can contain rich content (Markdown text, LaTeX math, images, etc.) and cards can be arranged hierarchically or connected via search filters and graph views. The app supports real-time collaboration: users can share cards with teammates who can edit or comment simultaneously. The company emphasizes user privacy, stating that it does not “snoop” on user data or sell it.