Privacy notice
Last updated 10 October 2026
Who is responsible
The data controller is Klever Trading (UK). Contact: klevertrading2026@gmail.com.
The website: no cookies, no tracking
This site sets no cookies, runs no analytics and loads no scripts, fonts or images from other websites. The calculator runs entirely in your browser, and nothing you type is sent anywhere.
If you pick a light or dark theme with the button at the top of the page, your browser remembers that choice in its own local storage (one setting called pbl-theme). It stays on your device, is never sent to us or anyone else, and isn't a cookie. Choose "Use system theme" at the bottom of any page to clear it. The site's typeface, Inter, is served from this site, not from a font service.
The Swap Cost Comparer and the Pool Depth dashboard need live market data, so your browser asks public market-data services for it directly: the Klever chain API (api.mainnet.klever.org), Swopus (api4.swopus.com), Gate (api.gateio.ws), Bitget (api.bitget.com) and, on the dashboard, SAME DEX (api.want-same.com). Like any website, those services can see your IP address and browser type, under their own privacy policies. The only thing you type that leaves your device is the swap size, as the amount in the Swopus quote request. The KuCoin and MEXC order books come through a small relay on this site, which fetches the books and keeps no record of who asked.
Our hosting provider may keep standard server logs, such as IP address, browser type and the page requested, for security and to keep the site running. Those logs are covered by the host's own privacy policy.
When you email us or order
| What | Why | Lawful basis | How long |
|---|---|---|---|
| Name, email address, your messages and intake answers | To reply, check scope and deliver your order | Contract (or steps before one) | Up to 6 years, for tax and accounting records |
| Rules, redacted code and trade-log CSVs you send | To prepare your report | Contract | Deleted 30 days after delivery |
| Payment details: name, email, amount and date | To take payment and keep records | Contract; legal obligation (tax) | Up to 6 years |
Card details are handled by the payment provider, and we never see them. We ask for only what we need: please don't send anything else, and never send keys or secrets.
Who else sees it
- Google (Gmail) stores our email.
- The payment provider we use (for example Stripe, Ko-fi or Lemon Squeezy) processes payments.
- The website host serves the site.
These providers may process data outside the UK under recognised safeguards, such as UK adequacy regulations or standard contractual clauses. We don't sell or share your data with anyone else, and we don't use it for advertising.
Newsletter
If you subscribe to the newsletter, Substack handles your sign-up under its own privacy policy. You can unsubscribe at any time from any email.
Your rights
Under UK GDPR you can ask to see the data we hold about you, correct it, delete it, restrict or object to how we use it, or have a copy in a portable format. Email us and we'll respond within one month. If you're unhappy with how we've handled your data, you can complain to the Information Commissioner's Office at ico.org.uk or on 0303 123 1113. Please contact us first so we can try to put it right.
Age
Our services are for adults (18+).
Changes
If this notice changes, we'll update the date at the top.