How LimsRat actually works.

No. There's no signup, no username, no password anywhere in the app — not even for sync. Open the app and start tracking samples immediately.

The entire app is free for a lab syncing up to 5 devices. Lab Sync raises that to 10 devices for $9/month per lab — adding more people to the same lab costs nothing extra. See Pricing for the full breakdown.

Any modern browser — tested on Chrome, Edge, and Safari, desktop and mobile. Peer-to-peer sync and camera scanning both rely on browser APIs (WebRTC, camera access) that all three support.

In your browser's local storage (IndexedDB) on each device — reads never wait on a network round trip. You can also connect a folder on your own disk, and every sample mirrors there as a plain JSON file, readable by anything, even without LimsRat.

Nothing happens to it — it was never on our servers to begin with. If you've connected a folder, your files are already sitting on your disk. Either way, the built-in CSV export and full zip backup mean you always have a copy outside the app.

Yes — CSV import walks you through mapping your existing columns to LimsRat's fields, so you're not starting from zero.

Sync traffic between your paired devices is encrypted in transit, using WebRTC's built-in DTLS. Data stored locally in your browser follows your browser's own storage security, the same as any other site you use.

Two devices pair using a short code or QR scan, then connect directly over WebRTC — the same peer-to-peer technology behind video calls. A small relay server helps the two devices find each other, but it only ever brokers that initial handshake — it never sees your sample data, which travels directly between your own devices.

LimsRat flags it as a conflict and asks a person to resolve it. It never silently picks a winner and discards someone's change — data integrity isn't a guess.

5 devices free, 10 on Lab Sync. That's a device count, not a per-seat charge — put as many people on those devices as you want.

No. Checkout for Lab Sync runs entirely through Lemon Squeezy, our payment processor — they handle and store your card details, not us. A successful purchase gives you a license key tied to a device fingerprint. That's a receipt, not a login with us.

Through Lemon Squeezy's own customer portal — the same place that processed your payment. Cancel anytime; your data and the free tier's 5-device limit keep working afterward, no penalty.

No, and LimsRat makes no 21 CFR Part 11, HIPAA, or ISO 17025 claim. It's built for research labs tracking their own samples — not regulated clinical studies, which need a validated system.