Privacy
Effective 9 July 2026 · Cadre3D Inc.
Cadre is a place to design 3D parts and get feedback on them. This page explains exactly what we collect, why, and who can see it — without the legalese.
The short version
- What you make stays on your device until you sign in, share, or ask for a review.
- When you're signed in, we autosave your open project to your private workspace so a closed tab never loses your work.
- An AI review sends measurements and your design's parameters — not your actual model file — to Anthropic to generate it.
- We never sell your data, never show ads, and use no third-party trackers.
- Your designs are yours. Export them anytime, and ask us to delete your account whenever you like.
What we collect, and why
Your account. To sign you in and keep your work with you, we store your email address, how you signed in (an emailed link, or Google), and a display name and color you can change. Your display name and color are visible to people you collaborate with.
Your designs. What you make lives in your browser first. It reaches us only when you sign in (we autosave your open project to your private cloud workspace so you don't lose work), run an AI review, or share a link. Files you import or export — STL, STEP, OBJ, 3MF, GLB — are read and written in your browser and are never uploaded.
AI review. When you ask for a review, we send your design to Anthropic (the makers of Claude) to generate it — but not your actual model file. We send measurements our software computes (wall thickness, overhang angles, whether the part is watertight) and your design's parameters (the shapes and dimensions that make up the part). We don't send your name, email, or account. Anthropic uses it only to return the review and, under their commercial terms, does not use it to train their models. A review only runs when you ask.
Improving the reviews. When you rate a flag or accept a suggested fix, we keep the outcome — which kind of issue was flagged, what you did with it, and whether our software confirmed the fix worked. We use these results to measure how good the reviews are and to choose the best model over time. These records are structured signal (the issue type and the result), never a copy of your design — and this is measurement, not AI training.
Collaboration. In a live session, your edits and cursor stream to the other people in real time. That live stream isn't stored. What we keep is the same as any saved project: the current version, plus any suggestions someone submits. Live collaboration isn't end-to-end encrypted, which means our server relays the changes between people. We never sell or mine them.
How Cadre gets used. To improve the product, we record which features get used and basic session information. Signed in, it's tied to your account; signed out, to a temporary session only. It never includes your model's geometry, and it never goes to an outside advertising or analytics company. Outside the EU/UK this is on by default; within the EU/UK we ask first. Either way, email us and we'll turn it off for your account.
Diagnostics and feedback. When something crashes, we log the error, the page it happened on, and your browser type so we can fix it. When you send feedback, we keep your message and anything you include. To stop abuse of the AI service, we keep a one-way hashed form of your IP address — never the address itself.
Where your data goes
A short list of the companies that help us run Cadre.
Companies that store or process your data:
| Provider | When | What it handles |
|---|---|---|
| Supabase | Always | Our database and sign-in. Stores your account, saved projects, and powers live collaboration. |
| Anthropic | Only on AI review | Receives your design's measurements and parameters to generate a review. Not your name, email, or model file. |
| Only if you use it | If you choose "Sign in with Google," Google confirms your identity and shares your email and name. Use an emailed link instead and Google isn't involved. |
Infrastructure we run on. Like any website, Cadre is served through a hosting provider (Netlify), which sees standard request logs such as your IP address, and uses Google Fonts to display type. These handle traffic, not your account or designs.
What we never do. We never sell your data or share it for advertising. No third-party trackers or ad pixels. We never use your designs to train AI, and neither does Anthropic under their commercial terms.
How long we keep it
| What | How long |
|---|---|
| Your projects and designs | Until you delete them |
| AI reviews | Kept with your account until you delete them |
| Usage analytics | Up to 12 months, then auto-deleted |
| Crash and error logs | 90 days |
| Security logs (hashed IP) | 7 days |
Your rights and choices
- Take your work with you. Export any design in open formats (STL, STEP, OBJ, 3MF, GLB) right from the editor.
- Delete your account. Ask us to delete your account and everything tied to it, and we will.
- Choose how you sign in. Use an emailed link and skip Google entirely.
- Control the AI. AI review only runs when you ask for it — never automatically.
- Opt out of analytics. Prefer we not record usage tied to your account? Email us and we'll turn it off.
- See what we hold. Ask for a copy of the personal data associated with your account.
The fine print
Who we are. Cadre3D Inc. is responsible for the data described here.
Where it's handled. Your data is processed on servers in the United States by the providers listed above.
Children. Cadre isn't intended for children under 16, and we don't knowingly collect their data.
Changes. If we change this policy, we'll update the date at the top and, for anything significant, tell you before it takes effect.
Cookies. We use a little local storage to keep you signed in and remember your preferences. We don't set third-party or advertising cookies.
Questions, or want something deleted?
Email spencer@cadre3d.com and a real person will answer — a copy of your data, a deletion, or a question about anything above.