Supernotes
Note-cards, not files: fast hierarchical notes for ideas and tasks.
About
Supernotes is a note-taking app built around note-cards instead of documents or files. Each card is a small unit — an idea, a task, a list — that can hold rich content like math equations, tables, images, checklists, and emoji. Cards nest into hierarchies that suit you, link to each other to form connections between thoughts, and can be found through filters, search, and sorting. Cards can stay private or be shared for real-time collaboration with friends and colleagues, and an API enables integrations and automation.
It is a cloud-based, proprietary product with apps across web, desktop (Windows, Mac, Linux, Chromebook), and mobile (iOS, Android). There is a free tier, with paid plans starting around $8/month that raise card and collaboration limits. The emphasis is on speed and low friction: no formatting wrestling, no files to manage. Tradeoffs: it is cloud-only with no offline-first or self-hosting story, notes live in a proprietary system rather than portable files, and the company is small, so the usual startup-longevity caveats apply.
What it can do
- Card-based notes: atomic cards instead of files or documents
- Hierarchical nesting of cards
- Wiki-style links between cards
- Rich card content: math, tables, images, checklists, emoji
- Filters, search, and sorting across all cards
- Real-time collaboration and sharing
- Public API for integrations and automation
- Free tier with paid plans from ~$8/month
- Web, Windows, Mac, Linux, Chromebook, iOS, Android
Setup
Sign up free at supernotes.app — it runs in the browser with no install. Install the desktop or mobile apps for Windows, Mac, Linux, iOS, or Android if you prefer. Create cards, nest them into hierarchies, and link related cards. Upgrade to a paid plan when you outgrow the free tier's limits.
Prerequisites
A modern browser or the desktop/mobile app; an account (free tier available).
Use cases
Works with
Trust score — 6/10
Scored 6/10 (metrics tier, metrics-v1). Evidence: multiple independent 2026 listings confirm the card-based model, hierarchical nesting, card linking, real-time collaboration, public API, and pricing around $8/month with a free tier; apps ship across web, desktop, and mobile. Strengths: distinctive fast card model, genuine collaboration, cross-platform coverage. Docked for: (1) closed source and cloud-only — no offline-first, self-hosting, or portable file format; (2) small company with limited public track record and no verifiable adoption figures; (3) no published benchmarks or independent security documentation for its sync. License: proprietary (freemium).
How the trust score is built
Full methodology →- Adoption · stars/downloads, log-scaled vs peers
- 5.0/10
- Maintenance · recency, releases, issue load
- 7.0/10
- Openness · license + docs
- 4.0/10
- Manual review · sanity read + red-flag check
- 7.0/10
- · Proprietary cloud product; no GitHub presence; no verifiable adoption figures
- · Card-based notes with hierarchies, card linking, math/tables/checklists, real-time collaboration, public API; free tier + paid ~$8/mo
- · Cloud-only: no offline-first, self-hosting, or portable format; no published benchmarks or security docs; small-company longevity caveat
Sources
Every fact above was checked against these sources. Where a claim comes from the provider and couldn't be independently verified, the text says so.