A free fan-made tool, run by one Old School RuneScape player. It collects as little as possible. Last updated 27 September 2026.
You don't sign up, and the site sets no cookies and shows no ads or third-party trackers.
We use Cloudflare Web Analytics to count visits and see which pages are popular. It doesn't use cookies or track you across other sites, and we only see totals (for example, "120 visits to the Dragon bones page, mostly from the UK").
If you change a seconds-per-kill number, it's saved in your own browser so it's still there next time; nobody else sees your numbers. The number (monster, item and seconds) is also sent to us anonymously so that, over time, we can improve the default kill times from what real players enter. It isn't linked to you.
If you enter your RuneScape name, we look up your levels on the official Old School hiscores (run by Jagex) and use them to estimate kill times. The name and levels are saved in your own browser so they're there next time; press "Stop using" to remove them. We don't store your name on our server or link it to anything; the hiscores result is cached for 10 minutes to avoid repeat lookups.
If you send feedback, we store your message and the page it was sent from. Your email address is optional and is only used to reply to you; we delete it once we've replied. We never share it or send newsletters.
To stop spam, the kill-time and feedback features use a one-way scrambled code made from your IP address and the date. It can't be turned back into your IP address, and changes every day. Your IP address itself is never stored.
The site is hosted on Cloudflare, which processes requests to serve it. Donations go through Ko-fi, which has its own privacy policy; we don't see your payment details.
To ask what we hold about you, or to have your feedback or email deleted, email osrsdropcalculator@gmail.com.