One of the primary goals during development was to minimize dependencies. The release version depends only on Firebase for backend database, storage and auth, OneSignal to coordinate push notifications, and Kingfisher to help with image caching. The UI was created from scratch, along with the design, app icons, software and overall architecture. Feel free to email me directly at email@example.com with questions, bugs or concerns. Pull requests are encouraged, and any issues can be reported here.