Tesserone

Your loyalty cards. On your phone. That's it.

Tesserone is a simple loyalty card manager with the familiar feel of a card stack. Tap a card to expand and flip it to the barcode — screen brightness maxes automatically so the cashier's scanner reads it first time.

No cloud. No accounts. No tracking. Your cards live on your device, where they belong.

WHY WE BUILT THIS For years, loyalty card apps just worked. You scanned a barcode. The app stored it. At the register, you pulled it up. Done.

Then they got acquired. "Modernised." Suddenly you needed an account. Then cloud sync you never asked for. Then ads. Then a paywall for features that used to be free. Then your cards disappeared because someone's server had a bad day. Then the app wanted your email address to display a barcode.

We built Tesserone like the old ones. Properly.

WHAT YOU GET • Local-first — your cards live on your device, no sign-up • Zero cloud — no servers, no backend, no database you could be in • Zero tracking — no analytics, no telemetry, no third-party SDKs, no network calls • Instant at checkout — tap to flip, brightness maxes automatically • Familiar card stack — cards that scroll, expand and flip exactly as you'd expect • All the formats — EAN-13, CODE-128, QR, Aztec, PDF417, DataMatrix • No lock-in — export the lot to a plain JSON file any time • Open source — Apache 2.0, every line auditable