Privacy Policy

Last updated: October 3, 2026

What we collect

• Account data: your email address when you sign up.
• Yarn and project data: stash entries, patterns, row-counter state, and notes you create in the app.
• Scan photos: photos you take to identify yarn, hooks, needles or supplies are sent to Anthropic to be read. When a scan finds something, the photo is kept with the items it saved, privately (only you can see it), until you delete those items or your account (account deletion is by request; see "Data retention and deletion" below). Sending us a photo is separate and only happens if you choose to (see below).
• Stash photos: photos you attach to stash items are stored privately; only you can see them.
• Finished-object photos: stored so they can appear on your finished-object pages. Anyone with the link can view them, and if you mark one public it also appears in the community feed and on share cards.
• Photos you choose to send us from the scanner: if you tap "Send us this photo", we keep that photo and what the scanner found so the SkeinSmart team can improve scanning. Only the team can see them. Ask us to delete them at any time at privacy@skeinsmart.com.
• AI usage logs: a count of which AI features you use (e.g. "yarn_vision", "what_can_i_make") to enforce free-tier quotas. No prompt content is stored.
• Error reports: anonymous crash reports including stack traces sent to Sentry. No personal data or yarn content is included.
• Payment data: if you subscribe to SkeinSmart Pro, Stripe processes your payment. We store only your Stripe customer ID and subscription status — never your card number.

How we use your data

• To operate and improve SkeinSmart.
• To enforce AI usage quotas (free: 25 lifetime uses; Pro: 500/day).
• To process subscription payments via Stripe.
• To diagnose bugs via Sentry error reports.

We do not sell your data, share it with advertisers, or use it to train AI models.

Third-party services

• Supabase — authentication and database (US-based). Supabase Privacy Policy
• Stripe — payment processing (if subscribed). Stripe Privacy Policy
• Sentry — error monitoring. Sentry Privacy Policy
• Anthropic Claude API — AI features (yarn photo analysis, pattern generation). Photos and prompts are sent to Anthropic for processing and are subject to Anthropic's Privacy Policy. Anthropic does not use API inputs to train models.

Data retention and deletion

Your data is retained until you delete your account. To request account and data deletion, email privacy@skeinsmart.com. We will delete your account and associated data within 30 days.

Your rights (GDPR / CCPA)

You have the right to access, correct, export, or delete your personal data. Contact us at privacy@skeinsmart.com with any requests.

Contact

Questions about this policy? privacy@skeinsmart.com