Open-Source Licenses

Signa App is built with Flutter and a number of open-source software packages. We're grateful to the developers and communities behind them. Each package is provided under its own open-source license (most commonly the MIT, BSD-3-Clause, or Apache-2.0 licenses).

The complete, always-current license text for every package we use — including indirect (transitive) dependencies — is available right inside the app: Profile ▸ menu ▸ Open-source licenses. The list below names the primary packages; the authoritative texts live in the app and on each package's page at pub.dev.

1. Framework

• Flutter & the Dart SDK — BSD-3-Clause (© Google LLC).
• cupertino_icons — MIT.

2. Firebase & Google services

• firebase_core, firebase_auth, cloud_firestore, cloud_functions, firebase_messaging, firebase_crashlytics, firebase_storage, firebase_app_check — BSD-3-Clause (FlutterFire, © Google LLC).

3. Device & platform

• geolocator, geocoding, permission_handler — location and permissions.
• local_auth — Face ID / biometric unlock.
• device_info_plus, connectivity_plus, app_settings, path_provider, shared_preferences — device info, connectivity, settings, and local storage.
• url_launcher, share_plus — opening links and sharing.

4. Media & documents

• image_picker, image_cropper, cached_network_image — photos and image loading.
• record, audioplayers — voice messages.
• pdf, printing — certificates and payroll/exports.

5. Utilities

• intl — dates and formatting.
• http — network requests.

Each of the above is used under its respective open-source license, and remains the property of its authors. Inclusion here does not imply any endorsement of Signa App by those authors. If you have a question about a specific license, email support@signaapp.net.