Quit It is an iPhone application developed by digitalsirup GmbH. It is a motivating program that encourages smokers to quit smoking and helps ex-smokers to stay quit. The app keeps track of the cigarettes you did not smoke, the amount of money you are saving, and the benefits of quitting. The latest version also supports the Apple Watch.

Quit It helps you define your own goals and shows you the tar, nicotine, and carbon monoxide you did not consume. It also calculates a ranking for you and allows you to accomplish and share achievements. The app asks for permission to receive push notifications, which are locally generated to notify you about new achievements.

If you are not sure if Quit It is what you are looking for, you can try the lite version available on the App Store. The app is available in the Lifestyle category under Health & Fitness.