Duffy is a free iPhone app developed by Patrick Rills, available in the Lifestyle category under Health & Fitness. It provides quick access to your step count directly on your Apple Watch face as a complication.

As an iOS developer, Rills noticed the absence of a steps complication on Apple Watches and decided to create one himself. Impressed by his prototype, he released Duffy to the App Store for free. Not only does Duffy have no ads, but it is also open source, inviting other developers to contribute to its enhancement.

With Duffy, you no longer need to open the Activity app and search for your step count. It offers a simple solution by displaying your steps at a glance on your Apple Watch face.

However, Duffy is more than just a stylish complication. The full watch app allows easy access to your steps, flights climbed, and distance traveled for today and the past week. You can even set a daily steps goal and receive notifications on your watch when you achieve it. For a more detailed view, the companion iPhone app offers a larger and easier-to-read interface, allowing you to explore trends and statistics over time.

To gather data, Duffy reads information from the Health app on your iPhone and Apple Watch, utilizing the HealthKit API for step count, flights climbed, distance traveled, and activity energy.