Libraries for animation.
- Facebook/Pop - open source animation library for OSX and iOS created by Facebook
Frameworks that can be used to store user data on your app.
- Core Data - Framework for heavy data requirements
- NSCoder - Used for light data requirements
- NSUserDefaults - Used for storing user settings
Manager that simplifies installing, updating and removing libraries and frameworks to and from your project.
Libraries for network programming.
- AFNetworking - Largest iOS 3rd party networking library
- NSURLSession - Apple's native iOS networking library
- SDWebImage - iOS library for Asynchronous image downloading
Libraries for accepting money transaction on your App.
- Stripe - iOS payment platform
Framework for testing.
- OCMock - Mocking framework for iOS
- TestFlight - Beta Testing framework
- XCTest - Apple's native testing framework that can do unit testing, UI testing, and performance testing.
Intro level books that teach you the basic concepts of the Objective-C language and iOS programming.
- iOS Programming: The Big Nerd Ranch Guide (4th Edition)
- Objective-C Programming: The Big Nerd Ranch Guide (2nd Edition)
Online Tutorials
- NSHipster
- Ray Wenderlich
- tutorialspoint
- Vea Software YouTube Channel - Objective-C and Swift video tutorials