Simple to start. Serious when you need it.

The Free plan includes unlimited reference stamps, custom prefix and suffix rules, local stamp history, and dark mode. It is intended for individual professionals working across their own documents.

Pro is billed at $8 per user, per month. Seats are managed from the admin console, and details such as annual billing and invoicing are confirmed during setup.

On Pro, a reference scheme — its prefix, year token, counter, and custom rules — is defined once and applied consistently across every member of the team, so documents share one convention.

On the Free plan, stamp history is kept locally with each user. On Pro, a centralised audit log records codes, timestamps, and authors across the team and can be exported for record-keeping.

RefStamp runs where Microsoft Word add-ins run — Word for Windows, Word for Mac, and Word for the web. Specific version and licensing requirements follow Microsoft's add-in platform guidance.

Yes. You can move between plans from the admin console. We aim to keep the process straightforward; exact timing of changes relative to your billing cycle is confirmed at the point of change.