Privacy
The short version: we hold your email address so we can send you a key, and that’s about it.
What we collect
Your email address. You give it to us when you buy. We use it to send your license key, to reply if you write to us, and to reach you if something goes wrong with your purchase. That’s all.
A record of your purchase. Date, amount, and the country used for tax. This is held by Lemon Squeezy, our payment provider — see below.
What we never see
Your card details. Checkout happens entirely on Lemon Squeezy’s systems. We never receive, store, or have any way of seeing your card number.
Your progress stays on your device
Which stages you’ve finished, what you’ve reviewed, and how far along the trail you are — all of it is stored locally in your browser. It doesn’t come to us and we can’t read it. Clear your browser data and it’s gone, including from our side, because it was never on our side.
Who else is involved
- Lemon Squeezy — handles checkout, receipts, taxes and license keys as the merchant of record. Your charge appears as LEMSQZY* on your statement.
- Vercel — hosts this site and keeps standard server logs.
- Microsoft Azure — delivers the audio files. No account or identifying information is sent.
Analytics
We don’t run any advertising trackers, and we don’t use your data to target you with anything. If we ever add a basic traffic counter, it will be a privacy-focused one that doesn’t follow you around the internet, and this page will say which.
Buying the app doesn’t sign you up for anything. If we ever start a newsletter, you’ll have to ask for it — and you’ll be able to leave with one click.
We don’t sell anything about you
Not your email, not your purchase history, not anything else. There’s no version of this business where that becomes a good idea.
Getting rid of your data
Email us at and ask. We’ll delete your email address and tell you when it’s done.
One catch worth knowing: we have to keep the purchase record itself for tax and accounting purposes, and so does Lemon Squeezy. You can ask for a copy of everything we hold on you at any time.
Questions
Write to . The founder replies personally.
Last updated: 9 August 2026 · Refund policy →