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Conquer your workouts with confidence every day. Choose your target area for focused training. Train anywhere—even at home. Over 170,000 women have crushed their fitness goals by using FBK. On the gram? Follow us @FITbyKaty and join the #FBKFitFam

Intimidated by heading to the weight rack at the gym? We’ve all been there. That’s why we created an app that helps you plan your workouts like a personal trainer. Our workout generator brings you infinite combinations of workouts from Katy Hearn so that you can feel and look stronger. Whether you’re new to weightlifting or a seasoned gym goer, use the workout generator and you’ll never get bored. Check out our top features below:

Workout Generator (Included In All Plans)
* Over 400+ exercises
* Instructional workout videos for each exercise
* Choose between at home or gym workouts
* Focus on the muscle group of your choice with 6 target areas
* New exercises continually added

Seasonal Plans (Premium feature):
* A new promo each season. New exercises in a constructed plan that’s expertly designed to help you look and feel stronger.
* Access to all previously available plans

Forum (Premium feature):
* Stay connected with our community of over 170,000 women who help, encourage and support one another.

Monthly Discounts (Premium feature):
* Get access to exclusive monthly discounts on our favorite health & wellness products.

Subscription Pricing and Terms:
FIT By Katy is free to download. Ongoing use requires an active Basic or Premium membership. Monthly subscription users are billed each month. You will be charged through your iTunes account at confirmation of purchase. Subscriptions renew automatically unless canceled at least 24 hours prior to the end of the subscription period. Subscriptions can be managed by going to Account Settings in iTunes. Refunds are not available once a purchase has been made. Read our full Terms of Service https://www.fitbykaty.com/terms-of-service, and our Privacy Policy https://www.fitbykaty.com/privacy-policy.

What’s New

Version 2.16.0

• Weight and rep tracking for the Workout Generator
• Static assets included in app for faster load times

Ratings and Reviews

4.4 out of 5
1.4K Ratings

1.4K Ratings

Triciya ,

Challenge Flop

First of all, I respect Katy and Hayden and the amount of work they put in to succeed. I did a few challenges when Katy and Hayden coached. It was money well spent. I felt their grind and effort to be the best coaches while doing their challenges.
I joined the winter challenge 2021, coached edition. I am not a fan of the coached challenges now that Katy and Hayden are not the coaches. I went in with a positive attitude because of the positive outcomes from previous challenges. My coached touched my macros and cardio once during the challenge. I know moving into a new house, renovating it, and prepping for her own show is a lot which affected the coaching. I felt like I was the last priority, which would be fine if the challenge was free. The response I got where short and simple with little feedback. Paying $200, there should be more coaching. I am disappointed, and hindsight I wish I spent money on the uncoached.
I think the challenge should implement a better form of communication on top of the once a week check ins. Also, maybe capping the amount of clients a coach takes on, especially if their prepping for their own physique show.

Developer Response ,

Hi Triciya - We just released the weight and rep tracking feature in the workout generator and should be rolling it out into our programs soon!

jcrow1224 ,


I wrote my previous review below just shortly after purchasing the 2018 Spring Promo. Since then I have competed in the 2018 Summer Challenge and purchased the Workout Generator. I still love the app and use generator every time I go to the gym.
I do wish the workout generator had a feature that would allow you to indefinitely ignore a certain workout if you’re physically incapable of doing it so that it won’t pull that into your mix again. It seems like the “Choose Another” gets stuck on pulling in the same workouts over and over. For example, I probably had to randomize 20-25 times until it finally pulled in the cable hamstring curl I was looking for as part of my workout. Or, it would be so cool if you could scroll through a list and pick the combination of workouts you wanted instead of the random selection. I saw they are working on a way for the app to track amount of weight used as well, can’t wait!!! For a startup app I’ve been really impressed and can’t wait to see what new features come this year!!!

Spring 2018 Review:
Absolutely love the app! I purchased the spring promo workouts and I love the organized workouts and video access. Makes for an easy transition to the next workout. I only hope enhancements come in the future to note weight on each workout and hold your place as you complete the weeks and relaunch the app each time. Overall, this turned out to be a great app. Thank you so much Katy & Hayden!

Senior Womp ,

So easy to use!

I just finished the Summer 2021 challenge. It was my first FBK challenge and I saw a lot of progress. I felt stronger each time I worked out, I lost 7 pounds, and I lost so many inches. I love this app because everything is so easy to keep track of. You’re able to track how many sets you’ve done, how much weight you lifted, and how many reps you’ve completed so you don’t get confused or lose count. When you’ve completed the exercise it automatically switches to the next exercise which keeps you working out and you don’t have to click around to figure out what’s next.

I did notice that some of the videos didn’t match up with the descriptions, but I used those videos as modifications of I couldn’t quite do that exercise yet (spider flys 💀). Otherwise I love how everything is there in the app. I love the short video tutorials for some of the exercises as well, it saves time looking for explanations for the moves.

Giving others the ability to purchase past challenges is so great as well because it keeps people busy between the challenges and it gives them something to follow. I love that there are different subscription levels as well making it so people still have the ability to complete Katy Hearn workouts at different levels of affordability. Overall, great job Katy and team!

App Privacy

The developer, Undefined LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Financial Info
  • Contact Info
  • Identifiers
  • Usage Data
  • Diagnostics

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Health & Fitness
  • Location
  • Contact Info
  • User Content
  • Sensitive Info
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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