App examples by Facebook: Sample apps including 2048, movies, tic tac toe and more
Currency Converter
Den: View houses for sale in the Northwest
Dribbble
Facebook Login
IcelandEarthquakes: Displays recent Iceland earthquakes
iTunesCatalog: Search iTunes
newswatch: News app using YouTube playlists
NortalTechDay: Conference app
Property Finder: Property search app
RSS Reader
Spacepics: A small app displaying NASA's Picture of the Day
To Do List
WeatherApp

ReactiveCocoa

C-41: Make developing film easier and more reliable by using this simple timer
- https://github.com/ashfurrow/C-41
- https://itunes.apple.com/app/c-41/id789924103
GroceryList: iPhone grocery list app, synchronized using GitHub
HausClock: Minimal Chess Clock using MVVM and ReactiveCocoa 🔶
ReactiveSwiftFlickrSearch: A Flickr-search app that uses MVVM & ReactiveCocoa 🔶
SimpleAuth: Simple authentication (OAuth for Twitter, Facebook, Instagram, Tumblr and more)
Tropos: A weather app using ReactiveCocoa and Forecast.io
- https://github.com/thoughtbot/Tropos
- https://itunes.apple.com/app/tropos-weather-forecasts-for/id955209376

ResearchKit

Cannonball: Fun way to create and share stories and poems using Fabric 🔶
- https://github.com/twitterdev/cannonball-ios
- https://itunes.apple.com/app/cannonball-magnetic-poetry/id929750075
Code by Apple
CloudKit 66
CloudKit 🔶 72
Federal Data SDK 🔶
HomeKit-Demo: A Swift demo for HomeKit 🔶
iOS 8 Sampler: Code examples for the new functions in iOS 8
LayerPlayer: Explore the capabilities of Apple's Core Animation API 🔶
- https://github.com/scotteg/LayerPlayer
- https://itunes.apple.com/app/layer-player/id949768742
Polls: iOS Client for Polls API by Apiary 🔶
RKGist: GitHub Gist app using RestKit
WWDC 2015 - Sample code by Apple

Cheddar: Simple & instant task manager
CloudKit-To-Do-List: Store & retrieve tasks using CloudKit 🔶
Task: Designed to quickly and easily add tasks to your iPhone 🔶
- https://github.com/mbcrump/TasksForSwiftWithPersistingData
- https://itunes.apple.com/app/task-application/id960435759

Pocket Forecast: Swift weather application for Typhoon 🔶
RainMan: Weather App using Forecast.io 🔶
Sol: Uses the Weather Underground API.
SwiftWeather 🔶
Tropos: A weather app using ReactiveCocoa and Forecast.io
WeatherApp: Weather app using React Native
WeatherMap: Weather around you in a glance. Uses OpenWeatherMap API 🔶
- https://github.com/TakefiveInteractive/WeatherMap
- https://itunes.apple.com/app/weather-map-take-five-interactive/id990141529
YoCelsius

A Menjar: Food menu app
- https://github.com/maurovc/aMenjar
- https://itunes.apple.com/app/a-menjar!/id816473131 id905177575
ChineseZodiac 🔶
ClickWheelKeyboard: Brings back the classic iPod click wheel as a keyboard for iOS 8
- https://github.com/b3ll/ClickWheelKeyboard
- https://itunes.apple.com/app/click-wheel-keyboard/id993111285
Ghosty: Blogging App for Ghost 🔶
Jupp: App with share extension for ADN 🔶
- https://github.com/dasdom/Jupp
- https://itunes.apple.com/app/jupp-share-extension-for-app.net/id909926740
Kiosk: The Artsy Auction Kiosk App 🔶
lastfm-iphone: Last.fm iPhone app
NYE: New Year's Eve Cocktail Menu 🔶
OpenCB: Interactive chess book reader
PebCiti: Pebble app to show nearest CitiBike NYC dock
PocketFlix: Put the power of Netflix at your fingertips
Valio: Valio Con 2014 Schedule 🔶
TheReservist: Check availability of iPhones 🔶
Vinylogue: A simple Last.fm client
- https://github.com/twocentstudios/vinylogue
- https://itunes.apple.com/app/vinylogue-for-last.fm/id617471119
VisitBCN: City guide for Barcelona
- https://github.com/maurovc/visitBCN
- https://itunes.apple.com/app/visitbcn/id904676442

This list was inspired by awesome-ios and awesome-swift.