// Legal
Privacy policy
Last updated: June 16, 2026
LATTICE is local-first. The app runs entirely on your Mac, and the people behind it (YREH Studio) run no servers for it. This policy explains the few moments LATTICE talks to the network — license checks, payments, and (only when you import) the AI providers whose keys you supply — and what stays on your device, which is almost everything.
Your data stays on your device
When you import, LATTICE reads the conversations.json from a folder you choose
and builds your graph in memory on your Mac. We operate no backend, no accounts, and no
cloud sync. We collect no analytics and no telemetry — the app does not
phone home to us, and there is nothing for us to see.
What we don’t collect
- No analytics, usage tracking, crash telemetry, or advertising identifiers.
- No copies of your conversations, graphs, embeddings, or summaries.
- No payment card details (see Payments below).
License checks
When you enter a license key, LATTICE sends the key and a generated machine fingerprint to Keygen to validate it and node-lock the license to your Mac. After a successful check it keeps working offline for a 14-day grace period. These requests carry no content from your archive — only the key and fingerprint.
AI providers (only when you import)
Importing is the unlocked feature, and it’s the only time your conversation content leaves your machine. To turn your archive into a graph, LATTICE sends representative excerpts directly from your Mac to Voyage AI (for embeddings) and Anthropic (for cluster naming and summaries), authenticated with your own API keys. That data goes to those providers under their privacy terms — never to us. We never receive, proxy, or store it. The free sample graph requires no keys and makes no such calls.
Payments
Purchases are handled by Paddle as our Merchant of Record, under Paddle’s privacy policy. Paddle processes your payment and billing details; we never see or store your card data.
What’s stored locally, and how to delete it
LATTICE keeps a few things on your Mac, never on our servers:
- Your API keys, your license, and a summaries cache in
~/Library/Application Support/LATTICE/. - Screenshots you capture in
~/Pictures/LATTICE/.
Deleting the ~/Library/Application Support/LATTICE/ folder removes all
local app data, including your stored keys and license cache.
Subprocessors
Children
LATTICE is not directed at children and is not intended for use by anyone under the age of 16 (or the age of digital consent in your region).
Your rights
Depending on where you live, you may have rights under laws such as the GDPR or CCPA — to access, correct, or delete personal data, and to object to certain processing. Because LATTICE is local-first, almost all of your data already lives only on your Mac and is under your direct control: you can delete it at any time (see above). For anything that involves Paddle (payment records) or a license tied to your purchase, contact us at support@yreh.com and we’ll help.
Changes to this policy
We may update this policy as the product evolves; we’ll revise the “last updated” date above and, for material changes, note them on this page. Continued use after an update means you accept the revised policy.
Contact
Questions about privacy? Email support@yreh.com.