Privacy Policy

Last updated: April 28, 2026

Onecards is built with privacy as a default. Here's exactly what happens with your data.

What stays on your device

All your decks, cards, study history, settings, personal notes, and tags are stored locally on your iPhone. Nothing is uploaded to any server we control.

What gets sent for AI generation

When you tap "Fill" or use any AI-assisted feature (single card generation, bulk creation, mnemonic suggestion, study guide, or answer grading), the relevant input — typically a card front term and template field names — is sent to a Cloudflare Worker we operate, which forwards the request to Anthropic's API. The response is returned to your device. We don't store or log the content of these requests.

What we don't collect

• We don't have user accounts, so we don't collect names, emails, or any identifying info
• We don't track which features you use, how often you study, or any usage analytics
• We don't have ads or third-party trackers
• We don't share data with anyone

Third parties

• Anthropic processes AI generation requests. Their privacy policy.
• Cloudflare hosts our request proxy. Their privacy policy.

Children

Onecards doesn't collect personal information from anyone, including children under 13.

Contact

Questions about this policy: mb13asdfg@gmail.com