Standard Notes vs Obsidian: Sealed or extensible (2026)

Standard Notes encrypts items with XChaCha20-Poly1305 and derives keys with Argon2. The encryption has been audited, the clients are open source so the claim is checkable, and you can run your own server. Since the 2024 Proton acquisition it also carries a 100-year data guarantee, which is a stronger institutional promise than anything else in this category.

The cost lands exactly where a knowledge base would live. Standard Notes has no wikilinks, no backlinks, and no graph, because you cannot build a link index across ciphertext without decrypting it somewhere you have promised not to. This is not a missing feature waiting on a roadmap. It is the price of the guarantee, and no paid tier changes it.

Obsidian reads plain markdown files, so it can index every link between them. Type two brackets, pick a note, and the target's backlinks pane lists the source, the graph gains an edge, and unlinked mentions surface as suggestions. Tags, a quick switcher, and full-text search all work for the same reason: the text is readable.

The extension API rests on that too. More than 2,000 community plugins exist because a plugin can see your notes, which is precisely what Standard Notes refuses to permit. Dataview queries frontmatter as tables, Templater scripts new notes, Excalidraw draws inside the vault. The same readability that makes all of it possible means anyone with access to the folder or the sync target can read your notes.

Standard Notes gives away end-to-end encrypted sync, which is genuinely unusual, and the free tier is plain text and tags only. Rich text is absent, folders are absent, and so are the markdown editors. Essential is about $49.99 a year and Productivity about $149.99, and reviewers hold that top figure against Notesnook at $19.99. So markdown editing, the thing you would want for notes at all, sits behind a paid tier.

Obsidian is free including commercial use since February 2025, with the whole app present and no feature tier above it. Sync is $4-5 a month for the official end-to-end encrypted service, Publish is $8-10, and both are optional. The free sync routes are iCloud, Syncthing, or the community git plugin, which has documented index.lock errors, line-ending conflicts, and unstable merge handling on mobile.

Standard Notes keeps encrypted items on its server or on one you host yourself, and exports to plain files when you ask. That export is the escape hatch and it works. It is not the format your notes live in day to day, so no other program on your machine can touch a note in place.

An Obsidian vault is a directory. One note, one .md file, named by you, sitting in Finder, and Obsidian imported nothing to make that true. Spotlight indexes it, ripgrep searches it, another editor opens it while Obsidian runs. Both properties follow from the same decision: readable files are portable to every tool and legible to anyone holding the disk.

Both are Electron, and both cover macOS, Windows, Linux, iOS, and Android, with Standard Notes adding the web. So the usual native-versus-Electron argument does not separate them, and neither publishes performance figures for a large collection. Standard Notes' interface is widely described as utilitarian, which suits a security tool and is a fair criticism of a daily writing environment.

Obsidian's documented costs are its own: slow startup on large vaults with many plugins loaded, plugin quality that varies, mobile plugin compatibility problems, and a mobile app slow to open big vaults. Standard Notes has no plugin surface for any of that to go wrong on, and it also has nothing for you to extend. Pick the failure mode you would rather live with.

Standard Notes is free if plain text and tags are enough, then about $49.99 a year for Essential and $149.99 for Productivity, with the top figure the one reviewers compare unfavourably against Notesnook's $19.99. Obsidian is free for personal and commercial use, so its only recurring cost is Sync at $4-5 a month, roughly $48-60 a year, plus the optional $50 per user per year commercial licence. Five years reads as $250 to $750 on Standard Notes against zero to $300 on Obsidian. Valutorio is a paid app on the Mac App Store with sync as a further optional subscription, so it is the priciest way onto this page. Standard Notes charges for encrypted hosting, which is a real ongoing expense to operate rather than a markup on a feature list.