Legal
Privacy
Last updated 26 July 2026. Plain version: we collect the minimum needed to run the product, we do not sell anything to anyone, and you can have it all deleted by sending one email.
Who we are
A10X is operated by Armando Gonzalez. Contact for any privacy request: hello@a10x.dev. We answer within 30 days.
What we collect
If you just browse: anonymous product analytics. Pages viewed, clicks on buttons and links, approximate location derived from IP at country and city level, device type, browser, and referring site. This is not tied to a name until you give us one.
If you give us your email: your email address, the page you gave it on, and the emails we later send you and whether they were opened.
If you run a practice case: the answer you type, so it can be graded. Answers are sent to our grading model and returned to you. We do not use your answers to train any model.
If you become a member: your email, subscription status, and payment records. Card numbers never touch our servers. Stripe handles payment and we only see the result.
We do not run session recording, we do not record your screen, and we do not read your keystrokes.
Why we collect it
To deliver what you asked for (grade a case, send a briefing, give you member access), to bill correctly, and to understand which parts of the product work. Under GDPR our bases are contract (delivering the product you paid for), legitimate interest (basic product analytics and security), and consent (marketing email, which you gave by submitting the form and can withdraw with one click).
Who processes it
- Vercel hosting and delivery.
- PostHog (US cloud) product analytics.
- Stripe payments and subscription records.
- Resend transactional and briefing email.
- Anthropic grading of practice cases and the coach.
- Google Ads conversion measurement when we run ads.
Each is an independent processor with its own terms. We do not sell, rent, or trade personal data, and we have never done so.
Where it goes
Our processors are US based, so data about EU and UK visitors is transferred to the United States. Those transfers rely on the processors' standard contractual clauses and, where applicable, the EU-US Data Privacy Framework.
How long we keep it
Analytics: retained by PostHog on its default retention. Email addresses: until you unsubscribe or ask for deletion. Case answers: kept only as long as needed to return your grade and debug the grader. Payment records: kept as long as tax and accounting law requires.
Your rights
If you are in the EU, UK, or California you can ask for a copy of your data, correction, deletion, or a stop to marketing. Everyone else gets the same treatment because running two standards is not worth it. Email hello@a10x.dev and say what you want. Every marketing email also has a one-click unsubscribe.
Cookies
We use first-party cookies for analytics and, when ads are running, a Google Ads conversion cookie. No advertising profile is built about you on this site and there are no third-party ad networks embedded here.
Children
A10X is for working engineers. It is not directed at anyone under 16 and we do not knowingly collect their data.
Changes
If this policy changes in a way that matters, we will change the date at the top and, for anything material, email members directly.