Fitness app maker Endomondo added a training feature to the premium version of its Endomondo Sports Tracker app. The company also raised the subscription price of its premium app.

Endomondo has long been a force in the fitness app world, claiming 18 million users and a platform accessible on a wide range of devices including Apple, Android, Blackberry and Windows Phone. The company has raised $3.1 million over two funding rounds.

The new function, called Endomondo Training Plans, launches in open beta today online, and for iPhone and Android mobile users. Users can make a personalized plan to get them ready to run a given distance or increase their speed on a distance they're already running. Options for training include 5k, 10k, Half Marathon, Marathon, or a custom distance.

The app creates a personalized training regimen based on users' current fitness level, how many days a week they have available to work out, and their goals. The Training Regimen then sends push notifications to the users to hold them accountable to their plans. The app will also use audio coaching to inform people about intervals and pacing as they run. If a user improves faster or slower than anticipated, their training program adjusts itself automatically.

With the addition of the Training Plan, Endomondo raised the monthly subscription rate for its premium app from $2.99 to $3.99 and the yearly rate from $19.99 to $29.99.

"We’ve worked on Training Plans for months and we believe it will be a great value-add for our users," the company wrote in a blog post to users. "Rather than charging for each program separately, we prefer to include the feature in our Premium package so that Premium users can generate as many programs as they like at no extra cost."

Current users will be grandfathered at their current rate, according to the company, and anyone will be able to test out the new features with a free 30-day trial.