An honest comparison
These are good tools — we use some of them. The table is our understanding of the current state of each (models and pricing change; check their sites for specifics). The section after it is the part comparison pages usually omit: when you should pick them instead of us.
| Smritsavant | Obsidian | Notion | TheBrain | |
|---|---|---|---|---|
| Data model | Spatial canvas of blocks + semantic auto-linking | Markdown files + folders, manual links, graph view | Cloud databases + pages | Manually-curated concept graph ("plex") |
| Where notes live | SQLite on your disk; sync via your own cloud folder / WebDAV | Plain files on your disk; optional paid sync service | The vendor's cloud | Local database + vendor sync |
| AI | Built-in, on-device (desktop; Apple on-device models on iOS; BYOK on Android) — chat with citations, inline edits behind diffs | Via community plugins, mostly cloud APIs you configure | Built-in, cloud-hosted, subscription add-on | Built-in assistant features, cloud-backed |
| Semantic search | Native, offline, 50+ languages | Plugins (typically cloud embeddings) | Cloud search, strong within workspace | Keyword search over the graph |
| Collaboration | None — single-user by design | Limited (file-level via sync) | Excellent — real-time, comments, permissions | Limited sharing |
| Extensibility | No plugins; open export formats + CLI instead | Huge community plugin + theme ecosystem | API + integrations | Limited |
| Pricing model | One-time license ($7–$29), majors are new purchases | Free personal core; subscriptions for sync/publish add-ons | Free tier; per-seat subscription for real use | Subscription (or dated perpetual option) |
| Offline | Everything works offline, including AI | Fully offline core | Limited offline; cloud-first | Works offline, syncs later |
When you should pick them instead
- Pick Notion if your notes are a team surface — shared docs, comments, permissions, databases your colleagues edit. Smritsavant has no collaboration at all, and won't pretend a sync folder is a workspace.
- Pick Obsidian if you want an ecosystem: thousands of plugins and themes, a decade of community workflows, and files-as-truth with zero purchase required. It's the strongest local-first generalist. Choose us over it when you want the semantic memory, the spatial canvas, and on-device AI built in and tested as one product rather than assembled from plugins — and note that our export produces an Obsidian-compatible vault, so trying us risks little.
- Pick TheBrain if hand-curating a formal concept graph over decades is the point for you. Its manual-first graph discipline is unmatched. Smritsavant's graph is inferred from meaning and corrected by you, which is a different philosophy — less curation effort, less curation control.
Choose Smritsavant when the priority is a private, single-player thinking space— AI that never phones home, notes that organize themselves by meaning, open formats behind a supported exit, and a price you pay once. That's the whole pitch; seethe longer case or the docs.