Leaked screenshots of Apple's companion app, published by 9to5Mac, offer a glimpse at how the Apple Watch, Apple's soon-to-be-released smartwatch, will handle activity and fitness.

When it was announced in September, Apple CEO Tim Cook explained that the watch will track movement through a built-in accelerometer and heart rate through optical sensors in the back of the device. It will also leverage GPS and WiFi on the user’s iPhone, which will be required to use many of the features of the device.

Cook also said there would be two health-related apps on the Watch to start: the Activity app for tracking day to day movement and the Workout app for more serious exercisers. A companion app on the iPhone, called Fitness, will aggregate data from both Watch apps, and share them into the already announced Health app on the iPhone. But as the most recent screen shots reveal, the user will also be able to control some activity settings for the Apple Watch from its general purpose companion iPhone app. 

In the app's activity section, Apple Watch owners will be able to activate "stand reminders". When the setting is turned on, the Watch will notify a user if they've been sitting for the first 50 minutes of an hour. Users can also set an interval to receive progress reminders every four, six, or eight hours. The Watch can also notify users if they've reached their stand goal, move goal, and exercise goal as well as a milestone or personal best.

Users can also opt to get a weekly summary, every Monday with a brief recap of the user's move performance from the previous week. Based on this, users can then adjust their move goals for the following week.

Another section, called motion and fitness, will allow users to toggle heart rate and fitness tracking on and off, so a user will be able to choose when their Apple Watch tracks their heart rate and step count.