Privacy Policy

Colorbook (colorbooklab.com) is operated by US App Studio (usappstudio.com). The short version: no accounts, no stored photos, minimal data.

Photos & prompts

Photos you upload and prompts you type are sent to our AI processing partner (fal.ai, running OpenAI image models) once, to produce your result, and are not stored on our servers. We never build a gallery of your uploads and never use them for training.

Payments

Purchases are handled entirely by Paddle, our merchant of record — we never see your card details. Paddle shares your email with us solely to verify purchases; their privacy policy is at paddle.com/legal/privacy.

Cookies & analytics

We set two functional signed cookies: your sign-in identity (the email you used at checkout) and, for subscribers, plan status. Credit balances live on our server keyed to that email. Analytics is Vercel Analytics: cookie-free, aggregate page counts only. No advertising cookies are used on this site.

Contact

Privacy questions: usappstudio.com/contact.