Effort Based

Fitness Tracker

Any Activity. Any Level. All Effort.

  • Download on the App Store
  • Get it on Google Play

Simple, easy to use

Workout Journal

Welcome to the Community!


I am 69 years old and retired with back problems, high blood pressure, high blood sugar and cholesterol. I started by going to the gym and working out, but that was boring until I found out about PK fitness. After a year, my blood test results are amazing. No more back pain and no more pills for blood pressure and blood sugar.


PK has quickly become my go-to fitness app. In fact, it's the only one I use now. It does everything the others do and more. I used to think I was working hard but when I started using PK I quickly found out that I was usually just "doggin" it.


I love this app! It's like "Facebook for exercising"! It definitely makes what is tedious a little more fun and it's encouraging to get the likes and encouraging notes.

Why you need

PK Fitness

Achieve your fitness goals faster and easier by tracking your effort during workouts. With PK Fitness, it’s not about how far or how fast, but rather how hard you work.

Real-time effort tracking provides you with the insight necessary to make mid-workout modifications, maximize your training, fast-track your results, and keep yourself accountable.

What makes PK Fitness


We’re the only app on the market that measures effort in real-time during workouts for any fitness level and any activity type. Meaning no matter what you do or how you do it, PK Fitness will track your effort continuously and accurately.  

Best of all, the effort score you see during workouts is personalized to you, learning with each workout you complete and guaranteeing accurate data even as you grow fitter, faster, and stronger.

Get motivated

See Results

Now available in the App Store and Google Play!

Supportive &


Whether you have a question about nutrition, want to post transformation pics, or are dying to share your 5K PR, it can all be done on the feed!

Post workouts, start discussions, update friends, and entertain the community with sweaty, unfiltered post-workout photos. Provide encouragement, show your support and nudge friends who haven’t worked out in a while, all within the app.

Accountable &


Staying accountable on your fitness journey has never been easier. Join a group in your area, or start one of your own to create a community of support around you with similar interests.

Keep track of your workouts based on location with PK Places. And participate in challenges where only one thing matters, your effort! Kick your motivation into overdrive with daily leaderboards, daily and weekly progress boards, and weekly streaks.  

Practical &


Your privacy is incredibly important to us, which is why we’ve made it a top priority to keep your information private. Add your home or work location to Hidden Locations and the app will automatically hide your map if a workout is done within the radius you customized. 

Want to share your workout publicly but only hide your stats tile? Easy. Just edit the privacy on the stats tile in save and share it worry-free. Want to be completely private? No problem. Mark your workouts as Private and they will be visible only to you.


Get motivated

See Results

Now available in the App Store and Google Play!

  • download pk fitness google play