Privacy policy

Controller

Samy Rabah, sole trader, 52 quai de Jemmapes, 75010 Paris, France — contact@uchronia.app.

What data, and why

• Account (email address, name, photo if you add one): running your account and credits (performance of the contract).
• Anonymous id (cookie) and IP address: free allowances and abuse prevention (legitimate interest). Per-IP counters are erased after 24 hours.
• Prompts and generated timelines: providing the service and share links; they're linked to your account to run the service (contract, legitimate interest).
• Purchases: Stripe processes the payment; we keep the payment id and the number of credits (contract, accounting obligations).
• Technical cost per generation, the host's technical logs: security and cost control (legitimate interest).
• Notes sent through "Feedback" (and your email if you give it): replying to you and improving the service (legitimate interest). Deleted once dealt with.

Who receives it

Your data is neither sold nor used for advertising. It's processed by our providers:

• Vercel (hosting, storage, gateway to the AI models, audience measurement);
• Clerk (accounts and sign-in);
• Upstash (counters and credits);
• Stripe (payments);
• OpenAI and Anthropic (text generation, through Vercel's gateway, under their business API terms).

Some are based in the United States; these transfers rely on the Data Privacy Framework or the European Commission's standard contractual clauses.

How long it's kept

• Account: until you delete it.
• Timelines: as long as the service exists, or until you ask for their deletion.
• Allowance counters: 24 hours (per IP) to 400 days (anonymous id).
• Technical costs: 400 days. Payment records: as Stripe's legal duties and accounting rules require (10 years).

Cookies

Uchronia only uses necessary cookies: your sign-in session (Clerk), an anonymous id for free allowances, and your chosen language. No advertising cookies.

Audience measurement (Vercel Web Analytics) uses no cookies and produces aggregated, anonymous statistics: page views (without the text of shared links), country, device type, and a few actions (starting a rewrite, buying credits).

Your rights

You have the rights of access, rectification, erasure, objection, restriction and portability. Write to contact@uchronia.app. You can also complain to the CNIL, the French data protection authority (cnil.fr).

The service isn't meant for children under 15 without their parents' consent.