Licenses & Attributions

Knabberfuchs 🦊 · last updated 24 June 2026

Knabberfuchs is built on open data and open-source software. This page credits the projects it relies on and the licenses they're used under. We're grateful to everyone who maintains them.
Food & nutrition data

Open Food Facts

Packaged-product and barcode data comes from Open Food Facts, a free, open, crowdsourced food database. © Open Food Facts contributors. The database is made available under the Open Database License (ODbL) v1.0; individual contents are under the Database Contents License (DbCL) v1.0. See the Open Food Facts terms of use.

Food & nutrition data

Swiss Food Composition Database

Whole-food nutrient values come from the Swiss Food Composition Database, published by the Swiss Federal Food Safety and Veterinary Office (FSVO / BLV). Used with attribution in line with its terms of use. Source: naehrwertdaten.ch.

Food & nutrition data

USDA FoodData Central

Typical serving and portion sizes are derived from USDA FoodData Central, a U.S. Department of Agriculture resource released into the public domain.

Software

Open-source software

The app is built with Flutter and the Dart SDK (BSD-3-Clause) and uses many open-source packages — for the local database, barcode and text recognition, charts, sharing, and more. The full per-package license texts are included in the app under Settings → About → Show licenses.

Branding

Knabberfuchs name & artwork

The Knabberfuchs name, fox artwork, and app icon are © Kemenor. All other trademarks are the property of their respective owners.

Questions about attribution or licensing? Email developer@knabberfuchs.ch.

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