What is counted
Each opening of the link is a click. The same person opening it several times on the same day is one unique visitor. Link previews (messaging apps and social networks fetching the page to show a card) and bots are left out, so the figures are people.
What is not kept
No cookie is set and no IP address is stored. A visitor is recognised for one day only, by a fingerprint drawn with a key that exists only in memory and is thrown away at midnight: nobody can follow a visitor from one day or one link to another.
Free and Pro
Free: clicks and unique visitors of the last 7 days, day by day. Pro (coming soon): up to 365 days, any period, comparison with the previous one, country, device, system, browser, hour of day and a CSV export.