FeynmanLM ("the app", "we", "our") is an independent app developed by Maarten de Vries. Contact: [email protected].
FeynmanLM servers do not store your source library or study history. This means:
All app data is stored in your private iCloud container (iCloud.com.feynmanlm). In the current app implementation this means a SQLite database plus source files rooted inside the app container. This includes:
iCloud storage is governed by Apple's Privacy Policy at apple.com/legal/privacy. Data is encrypted in transit and at rest by Apple.
Your FeynmanLM account session is stored in your device's Keychain. No OpenRouter or lab-provider inference key is shipped in the app.
Built-in AI requests pass through FeynmanLM-operated Cloudflare infrastructure to OpenRouter. The content sent can include:
The managed proxy stores billing metadata such as model, token counts, exact cost, request identifier, and your Apple-assigned account identifier. It does not add source text or prompt bodies to the billing ledger. OpenRouter's handling of request content is governed by its privacy policy.
If you connect an external assistant through MCP, your assistant's requests and the app's responses pass through FeynmanLM-operated Cloudflare infrastructure before reaching your Mac. The hosted relay does not log or store MCP request or response bodies, but it is a trusted relay and is not end-to-end private from FeynmanLM infrastructure.
The hosted relay stores relay metadata such as tunnel records, tokens, OAuth credentials, and last-seen timestamps.
FeynmanLM offers optional Google connectors. They run only when you explicitly connect them and grant access; FeynmanLM never accesses your Google account on its own.
YouTube. FeynmanLM uses YouTube API Services to import the videos you have liked on YouTube. Connecting YouTube grants FeynmanLM read-only access (the youtube.readonly scope) to your liked-videos feed. FeynmanLM reads the title, video ID, position, and uploading channel of each liked video and stores them in your own knowledge base on your Mac and in your private iCloud container. FeynmanLM does not read, modify, or upload anything else in your YouTube account.
Google Drive. The Google Drive connector imports Drive files you point it at (read-only) as meeting or document sources. It reads a folder or document only when you explicitly start an import.
If you later open or review an imported video or document, its transcript or text is fetched at that point and stored with the source. As described in Section 4 and Section 5, source content you choose to review may be sent through managed AI to OpenRouter, or to an AI assistant you have connected over MCP. FeynmanLM does not otherwise share your Google data with third parties.
By using the YouTube connector you agree to the YouTube Terms of Service. Google's handling of any data it receives is governed by the Google Privacy Policy. You can revoke FeynmanLM's access to your Google account at any time from the Google security settings page.
FeynmanLM requests microphone access for dictation and realtime voice conversations. When you use voice input:
FeynmanLM's infrastructure does not receive or store realtime voice audio. It receives metering totals needed to debit your prepaid balance. The selected provider processes the audio and conversation for the duration of the session under its own privacy policy.
FeynmanLM uses Sign in with Apple for authentication. When you sign in:
Sign in with Apple authentication is governed by Apple's Privacy Policy.
Prepaid AI-credit purchases and optional auto top-up setup use Stripe-hosted Checkout. Stripe stores and processes your payment details. FeynmanLM does not receive or store your full card number.
For billing we store your Stripe Customer and PaymentMethod identifiers, selected refill amount and threshold, rolling spending limit, consent timestamp, payment status, and prepaid-credit ledger. Auto top-up is off by default, requires explicit setup, and can be disabled in Settings at any time.
FeynmanLM does not integrate any third-party analytics SDK (such as Firebase, Mixpanel, or Amplitude).
If you have opted in to sharing analytics with app developers in macOS settings, Apple may provide us with aggregated, anonymized crash reports and basic usage metrics. This data does not include personally identifiable information. You can opt out in System Settings → Privacy & Security → Analytics & Improvements.
On macOS, FeynmanLM can read your Safari Reading List bookmarks to automatically surface recently saved articles. This data is:
~/Library/Safari/Bookmarks.plistThis feature requires you to grant Full Disk Access in macOS System Settings. You can revoke this permission at any time.
FeynmanLM is not directed at children under 13. We do not knowingly collect personal information from children under 13. If you believe a child under 13 has provided information through the app, please contact us at [email protected].
You can permanently delete your managed FeynmanLM account in the iPhone app at Settings → Delete Account. A fresh Sign in with Apple confirmation revokes FeynmanLM's Apple authorization before deletion removes your Apple-assigned account identifier, managed-AI balance, usage and MCP metering history, saved Stripe billing link, and auto top-up configuration. The app then removes its session from your device Keychain.
We retain only a one-way hash that cannot be used to sign in or recover your account, solely to prevent the one-time starter credit from being claimed repeatedly. Stripe may retain transaction records it is legally required to keep.
Deleting the managed account does not delete your private iCloud source library. That library belongs to your Apple account and remains under your control:
Related app data may also exist in:
If we make material changes to this privacy policy, we will update the effective date at the top of this page and, where appropriate, notify users within the app. Continued use of the app after any changes constitutes acceptance of the updated policy.
Questions or concerns about this privacy policy?
Email: [email protected]
Website: feynmanlm.com