Privacy

Last updated 28 September 2026

Only your message and the details shown here are included. No location, conversion history or device identifier is collected. You review the email before sending it.

What the app stores

Your deck of countries, your home country, language, currency and time zone, which board rows you have switched on or off and in what order, your tipping preferences, any exchange rates you have set by hand, and a cached copy of the last rate table it downloaded.

All of it is written to your device's own storage and stays there. It is not synced, not backed up to us, and not readable by anyone but the app. Deleting the app deletes it.

Location

Convert Once opens on the country you are standing in. To do that it asks for your location while you are using the app, and takes a single fix once per launch.

That fix is turned into a two-letter country code on the device and then discarded. Your coordinates are never stored and never transmitted to us — we have nowhere to transmit them to. If you decline the permission, the app opens on whichever page you last used and everything else works normally. Your location never changes your home, your language or your currency.

The one network request

The app fetches exchange rates from open.er-api.com, a public, keyless JSON file. The request carries no account, no identifier, and nothing about you — it is the same request for every person who makes it. That service will see your IP address, as any web server does.

A rate table is also compiled into the app, so it works with no network at all. Every figure in the app can tell you whether it came from a live fetch, a cached copy, the built-in table, or a rate you typed yourself.

What we do not do

No accounts, sign-in, or email address required — or possible.
No analytics or crash-reporting SDKs. No Firebase, no Amplitude, no Sentry.
No advertising and no advertising identifiers.
No third-party tracking SDKs of any kind.
Only your message and the details shown here are included. No location, conversion history or device identifier is collected. You review the email before sending it.

Children

Only your message and the details shown here are included. No location, conversion history or device identifier is collected. You review the email before sending it.

This website

This website uses Cloudflare Pages and Cloudflare Web Analytics to measure visits and page performance without analytics cookies or cross-site tracking. A preference cookie remembers your language. Cloudflare processes network information to deliver and protect the site. The app itself has no analytics.

If you write to us

From app version 1.2, Settings → Support → Report an issue prepares an email with your message, report ID, app version, build, iOS version, device model and app language. You review and send it. We review email before creating a private GitHub issue with only the necessary, redacted details to track a fix. Keep the report ID for follow-up. Contact [email protected] to ask about or delete your report and related ticket data.

Your rights

Changes

If this policy changes, the date at the top changes with it. If a change ever means the app starts collecting something, it will be said plainly here and in the app before it happens.

Contact

Zobot LLC — [email protected]