Open Source Licences

Last Updated: 26 April 2026

Void Deck is built with the help of open source software, platform SDKs, public APIs, and proprietary service integrations. We are grateful to the developers and communities behind these projects. This page lists key open source libraries and major proprietary SDKs used by the app and backend. It may not include every transitive dependency, operating-system component, platform service, development tool, or provider-side component.

Third-party software and services are provided by their respective owners under their own licences, terms, warranties, disclaimers, and support rules. Void Deck does not grant rights in third-party software beyond the rights granted by the applicable third-party owner.

iOS App

LibraryLicenceRepository
SwiftSoup MIT github.com/scinfu/SwiftSoup
GoogleSignIn-iOS Apache 2.0 github.com/google/GoogleSignIn-iOS
Google Mobile Ads SDK Proprietary Google AdMob Documentation
Firebase iOS SDK Apache 2.0 github.com/firebase/firebase-ios-sdk
StoreKit / App Store APIs Apple Platform Terms developer.apple.com/storekit

Backend

LibraryLicenceRepository
Express MIT github.com/expressjs/express
cors MIT github.com/expressjs/cors
cheerio MIT github.com/cheeriojs/cheerio
node-cron ISC github.com/node-cron/node-cron
pg MIT github.com/brianc/node-postgres
node-cache MIT github.com/node-cache/node-cache
firebase-admin Apache 2.0 github.com/firebase/firebase-admin-node
@google-cloud/tasks Apache 2.0 github.com/googleapis/google-cloud-node
@google-cloud/storage Apache 2.0 github.com/googleapis/nodejs-storage
@apple/app-store-server-library MIT github.com/apple/app-store-server-library-node
jsonwebtoken MIT github.com/auth0/node-jsonwebtoken
bcryptjs MIT github.com/dcodeIO/bcrypt.js
otpauth MIT github.com/hectorm/otpauth
qrcode MIT github.com/soldair/node-qrcode
multer MIT github.com/expressjs/multer
sharp Apache 2.0 github.com/lovell/sharp
@google/genai Apache 2.0 github.com/google-gemini/generative-ai-js

Major Proprietary or Public Data Integrations

Provider / ServicePurposeTerms
AppleApp Store, subscriptions, push notifications, Sign in with Apple, platform APIsApple Developer Terms
Google Cloud Platform (GCP)Backend hosting, database, object storage, task queues, API delivery, and server-side processing, including Cloud Run, Cloud SQL, Cloud Storage, and Cloud Tasks where usedGoogle Cloud Terms
Google Maps Platform / PlacesPlaces, directions, geocoding, place photos, local searchGoogle Maps Platform Terms
Google AdMobAdvertising and ad measurementAdMob Terms
Microsoft Azure Content SafetyImage safety, content safety, and moderation support where usedAzure Legal Information
CloudflareEdge security, routing, legal site delivery, protected accessCloudflare Terms
NEA / data.gov.sg / LTA-related public information sourcesWeather, dengue, transit, traffic, and public local-information featuresProvider-specific public data terms and conditions

Licence Texts

MIT Licence

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Apache Licence 2.0

Licensed under the Apache License, Version 2.0 (the "License"); you may not use these files except in compliance with the License. You may obtain a copy of the License at

https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

ISC Licence

Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

Google Mobile Ads SDK

The Google Mobile Ads SDK is proprietary software provided by Google LLC. Use is governed by the Google AdMob Terms of Service and the Google Terms of Service.

Apple Platform and StoreKit Services

Apple platform services, including StoreKit, App Store subscriptions, push notifications, Sign in with Apple, and related developer APIs, are governed by Apple's applicable developer agreements, App Store terms, and platform rules.

Corrections

If you believe an open source notice is incomplete or inaccurate, contact info@voiddeckapp.com with the library name, licence information, and relevant details so we can review it.