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Privacy Policy
Last updated: June 28, 2026.
This page describes how the NumaSim project maintainers ("we", "us") handle personal data in connection with the NumaSim project — the landing site at https://numasim.com, the circuit editor and simulator at https://app.numasim.com, and this documentation site at https://docs.numasim.com (together, the Service).
NumaSim is currently a small, pre-release project. This policy is intentionally narrow and covers only what the Service actually does today. We will update this page if that ever changes; the date above is the source of truth for what's current.
1. Who we are
NumaSim is maintained by an independent team. For any privacy-related question or request, you can reach the maintainers at:
Email: [email protected]
2. What data we collect
The only personal data we collect is what you choose to provide when you sign in to NumaSim.
2.1 If you sign in with Google
When you click Continue with Google, our authentication provider (see §3) receives the standard OAuth profile that Google releases to third-party applications:
- Your email address.
- Your display name.
- Your profile picture URL (avatar).
- A Google account identifier so we can recognize you on subsequent sign-ins.
We do not request any restricted or sensitive Google scopes (Gmail, Drive, Contacts, Calendar, etc.). We do not read, write, or have any access to data inside your Google account beyond the basic profile fields listed above.
2.2 If you sign in with email and password
Some users may sign in using an email address and password instead of Google. In that case we store your email address and a securely hashed password through our authentication provider (see §3). We never see or store your password in plain text.
2.3 What we do not collect
For clarity, NumaSim today does not:
- Upload your circuit files to a server. Circuits you save are written to your own computer through the browser's file-picker.
- Collect product analytics (no Google Analytics, no PostHog, no similar tooling).
- Track you across other sites.
- Sell, rent, or share your data for advertising.
3. Service providers we use
We rely on a small number of third parties to run the Service. They each see only the data necessary to provide their part of it.
| Provider | What they do | What they see |
|---|---|---|
| Lets you sign in with your Google account. | The fact that you signed in to NumaSim; the profile data listed in §2.1. | |
| Supabase, Inc. | Authentication and session management. | Your account record (email, display name, avatar URL, hashed password if applicable, sign-in timestamps). |
| Cloudflare, Inc. | Hosting (Cloudflare Pages) and CDN for the website and docs. | Standard web-server traffic data — IP address, user agent, requested URL — used to deliver pages and prevent abuse. |
Each of these providers has its own privacy policy that governs how they handle data on our behalf. By using NumaSim you are also subject to those policies.
4. Cookies and local storage
NumaSim uses your browser's local storage to keep you signed in between visits, to remember UI preferences (toolbar layout, scope panel state, etc.), and to cache the WebAssembly simulator so the app loads quickly. We do not use third-party advertising or tracking cookies.
5. How we use the data
We use the information described in §2 only to:
- Sign you in and recognize your account on later visits.
- Show your display name and avatar in the app UI.
- Communicate with you, if needed, about your account or the Service.
We do not profile you, build advertising audiences, or share your data with anyone outside the providers listed in §3.
6. Data retention
Your account record persists for as long as you have an account with NumaSim. If you ask us to delete your account (see §7), we delete your record from our authentication provider. Standard server logs at Cloudflare and Supabase may retain technical metadata (e.g. IP addresses, request timestamps) for the limited windows defined by those providers.
7. International users
NumaSim is operated from Canada and uses service providers whose infrastructure is global. By using the Service you understand that your personal data may be transferred to and processed in countries other than your own.
8. Security
We use industry-standard authentication (Supabase + Google OAuth) and serve all traffic over HTTPS. No system is 100% secure; you use the Service at your own risk.
9. Changes to this policy
We may update this policy as NumaSim evolves. When we do, we will change the date at the top of this page.
10. Contact
Questions or requests about this policy:
Email: [email protected]
See also: Terms of Service · Third-Party Notices