MapMyFitness has once again updated its mobile app, though the new feature called Gear Tracker is an iPhone exclusive at the moment; Android version will get it in the near future.

Powered by Zappos.com, this first of its kind feature lets members add athletic shoes to their account, record mileage from walks, runs and hikes and receive notifications when it’s time for a new pair of shoes.

When adding shoes to Gear Tracker, users can adjust the gear lifespan and set the start date to retroactively add miles from past workouts.The average athletic shoe has a suggested lifespan of 300-500 miles, at which point common injuries like shin splints and runner’s knee become more likely. When adding shoes to Gear Tracker, users can adjust the gear lifespan and set the start date to retroactively add miles from past workouts. Zappos.com powers the shoe search engine, and with more than 8,500 athletic shoes in the company’s catalog, members can add multiple gear items, based on activity type.

Once shoes are added, users will receive updates when they reach major milestones at 50%, 75% and 100%, based on the lifespan selected. Then, once maximum miles are reached, there’s the option to “retire” old gear and create a virtual trophy room to showcase accomplishments and highlight the best workouts. For the first time ever, in depth gear usage patterns can be overlaid with workout history and current performance to provide users with insights into how they can perform better.

Finally, Gear Tracker also includes integrated access to Zappos.com store, making it easy for users to buy the same pair of shoes or try out something new. The complete Zappos catalog will be available for purchase, and recommendations will be provided based on your preferences.

At launch, Gear Tracker will only include athletic shoes with additional gear such as apparel coming to the future versions of MapMyFitness.