Privacy policy.
We collect as little as we can. There are no ads, no tracking cookies and no analytics on this site.
Last updated 8 November 2026
Who we are
Inverse Square is an independent software studio in the United Kingdom, and is the controller of the personal data described here. For anything about your data, email hello@inversesquare.app.
Browsing this site
- No analytics, no ads, no tracking cookies. We don't use Google Analytics or any similar tracker.
- Hosting. The site is served by Cloudflare. Like any web host, Cloudflare processes your IP address and request details to deliver pages and protect the site from attacks.
- Fonts and libraries. Pages load fonts from Google Fonts, and some Labs tools load code libraries from cdnjs and jsDelivr. Those services see your IP address when your browser fetches the files.
Free Labs tools
- The tools run in your browser. Photos, profiles and settings you use in them stay on your device, saved in your browser's local storage, and aren't sent to us.
- Tools that show prices in your currency fetch exchange rates from Frankfurter (
api.frankfurter.dev). They work out your region from your device's time zone, on your device, without looking up your IP address. - Affiliate links. Some buy buttons are affiliate links to Amazon, or to retailers through the Awin network. If you click one, that site may set its own cookies to record that you came from us. Their privacy policies apply once you're there.
- The Ko-fi button takes you to Ko-fi, which handles any tip under its own privacy policy.
Contact form and email
When you use the contact form, your name, email address and message are sent to us by email through FormSubmit (formsubmit.co). We use them only to reply to you, and delete the message once the conversation has finished and is no longer needed, at the latest after two years. Our lawful basis is legitimate interests: answering the message you sent.
Buying software
Purchases are processed by Lemon Squeezy, our reseller and merchant of record. Lemon Squeezy collects your payment details, and we never see your full card number. They share with us your name, email address, country, what you bought, and your licence key. We use these to provide the licence, give support and handle refunds, which is necessary to perform our contract with you. We keep order records for six years, because UK tax law requires it. Lemon Squeezy's own privacy policy covers the payment itself.
Licence activation. When you activate or check a licence, the app sends your licence key and a name for the computer to Lemon Squeezy's licence service, so the key can be limited to the number of computers you paid for.
Where your data goes
Cloudflare, FormSubmit and Lemon Squeezy may process data in the United States. Where they do, the transfer is covered by the UK's adequacy regulations for the US Data Privacy Framework, or by the standard contractual clauses in their data processing terms. We never sell your data, and we don't share it with anyone for marketing.
Your rights
Under UK GDPR you can ask for a copy of your data, ask us to correct or delete it, object to how we use it, or ask us to restrict it. Email hello@inversesquare.app and we'll reply within a 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.
Changes
If we start collecting anything new, such as a product waitlist, we'll update this page first and change the date at the top.