about

Where can I find the MyFitnessPal login on C25K Trainer app?

The MyFitnessPal login is on the same screen as the Facebook/Twitter login in our C25K app, which is at the...

I just graduated from the 10k app, and now want to start training with half/full marathon app! What week should I start from?

The Marathon Trainer’s program is significantly different from the C25K/10K Trainer, so there is no direct bridge. Having said that, many...

How do I get the app to show up on my Apple Watch?

You’ll need to open the Apple Watch app, and then scroll down until you find our app. Tap on it...

How do I cancel my iOS subscription?

If you’re having any issues with the app, please email us first (contactus@zenlabsfitness.com) and our support team will do their...

The App won’t sync to my apple watch after I complete my workout.

Make sure you are syncing the correct app versions on watch and phone. There is a pro and free version...

What is the Zen Unlimited Pass and how does it work?

After all the user feedback from our community, we are excited to introduce the Zen Unlimited Pass. We have launched...
Download C25K for free!