Cape Tracker has no accounts and asks for no personal details. Here is everything it keeps, and how to remove it.
Your progress (ticked achievements, plans, notes, settings and the stats from your last sync) is saved in your browser's local storage. It stays on that device until you clear it, use Settings → reset, or clear your browser's site data.
Each device gets a random ID. The server never learns who you are, only what is listed here:
The average-player figures on Compare are built from the stats histories above, and only ever shown as a median and mean of at least five players. No one's name or individual numbers are shown.
Looking up a player sends their display name to Jagex's RuneMetrics and HiScores services, through Cape Tracker's server, and importing drop history sends it to Runepixels. Page views and load times are counted with Vercel Analytics and Speed Insights, which do not use cookies. Your IP address is used briefly to stop the sync services being flooded; Cape Tracker does not save it.
Cape Tracker does not sell, share or advertise with any of this. Questions or requests go to the contact page.