Notion vs GitHub for product specs

What Notion does well

Notion is genuinely good at what it was built for. Writing is fast and pleasant, databases and relations make roadmaps and trackers easy, and one workspace can hold the handbook, meeting notes, and planning docs for the whole company. Sharing is flexible and non-technical teammates never feel out of place.

If a document is about the company — policies, onboarding, rituals, planning — Notion is a fine home for it, and nothing below argues otherwise.

What GitHub does well

GitHub is built for documents that must be reviewed and must stay true. Changes go through pull requests with named approvals and enforceable rules (branch protection can literally require a second reviewer before anything lands). History is permanent and attributed — every change has an author, a timestamp, and a diff. Permissions are the same system that already governs the code, managed by the same people.

And there's proximity: the code that defines what the product actually does is one directory away. Engineers work there all day, and so do AI coding agents — files in the repo are context they pick up automatically.

The drift problem decides it

A spec describes the product, and the product changes through the repo — every scope cut, edge-case decision, and design change eventually lands there as code. A spec in Notion has no mechanism to receive those updates; someone has to remember to leave the repo and go edit a page. A spec in the repo can change in the same pull request as the code it describes, reviewed by the same people, gated by the same rules.

That's the structural difference. It's why specs in workspace tools drift no matter how disciplined the team is — we wrote up the full mechanism here.

The comparison at a glance

Point by point, for specs specifically:

• Writing — Notion's editor is more polished out of the box. specgit gives you a visual editor on repo files, so nobody writes raw Markdown either way.
• Review — GitHub has pull requests with required approvals; Notion has comments, with no way to gate a change on sign-off.
• History — every save in the repo is a commit, forever; Notion's page history retention varies by plan.
• Permissions — repo access is one system shared with the code; a Notion workspace is a second permission system to administer.
• AI agents — repo files are context automatically; workspace content needs integrations to reach an agent.
• Tracking — Notion offers page analytics (who viewed what, and when). specgit runs no client analytics or tracking scripts at all.

Who holds your docs

In Notion, your docs live in Notion's cloud, exportable but resident there. In the repo approach, docs are plain Markdown files in a repository you already control — with specgit specifically, the app reads files when you open them and writes edits back as commits, keeping no long-term copy and running no product analytics, ad tracking, or third-party tracking scripts. The details are on our security page.

For most teams this is a tiebreaker rather than the headline, but if your specs are sensitive — unannounced products, pricing changes — it matters that the doc never leaves your repository.

The honest verdict

Use both. Keep the handbook, the meeting notes, and the databases in Notion — it's better at them. Put the product specs in the repo, next to the code they describe, where review is enforced and drift is fixable in the same pull request.

The historical blocker on the GitHub side was that PMs had to learn Git and Markdown to participate. That's the gap specgit closes: writing in a visual editor where saves are commits, comments are pull request threads, and publish is a merge. If your team is coming from Google Docs instead, the same comparison applies — and if your team drafts PRDs with an AI tool, the same question applies there too. If your engineers already talk about docs as code, here's what that means for product managers. Plans start free; see pricing, or try the interactive demo on the homepage first — the real editor, no sign-up.