20 Pull Ups Trainer Challenge 4+

Back Muscle Toner Pullups

Zen Labs

Designed for iPad

    • 4.6 • 784 Ratings
    • Free
    • Offers In-App Purchases



■ Join the millions completing the Zen Challenge Series!
■ 0 to 20 Pullups in 6 weeks!
■ Featured on Glamour Magazine, Yahoo!’s Appolicious, Popsugar Fitness, Apple’s “What’s Hot”, Apple’s “New & Noteworthy”, and doctor recommended on healthTap!

"Had trouble even doing 1 pulll-up, but this program helps train you by first holding on to the bar if you can't finish 1 pull-up. At first I was a skeptic, but I'm at 5 pull-ups now and still going! I'm a believer!"

Are you ready for the 20 Pull-Ups Challenge? Train your upper body/core and build up to completing 20 pull-ups with same people that brought you the OFFICIAL #1 5K Training app C25K®.

Using a proven program, you will be able to complete 20 straight pull-ups after just 6 weeks! The Zen Challenge Series is tailored towards all fitness levels. From first-timers to fitness veterans, this app will build up your strength and stamina to complete 20 pull-ups. Can't do a single pull-up? Don't worry, there is a built-in program to help you build strength to get there!

≈ It's easy and straight forward to start ≈
1. Just open the app and start!
2. Listen to the voice cues!

≈ Features ≈
◎ First 2 weeks are free! Get started today!
◎ Achieve badges and awards for finishing a workout!
◎ Intuitive user friendly interface
◎ Integrated with Facebook/Twitter/Instagram communities, so share your progress and achievements!

≈ NEW Zen Unlimited Pass - Try it for free! ≈
◉ Award winning music curated from top DJ's!
◉ Scientifically proven to increase motivation by 35%
◉ Unlimited access to all pro features across ALL Zen Labs Fitness apps

We hope you enjoy the app and find it to be a useful training tool. Please leave us any friendly feedback, and rate us if you like the app!

Questions/comments regarding the app? Please email us at contactus@zenlabsfitness.com or visit us at www.zenlabsfitness.com.

≈ Connect ≈
Facebook: @C25Kfree
Twitter: @C25Kfree
Instagram: @officialc25k
Hashtag: #C25K

Subscription pricing and terms:

The subscription will automatically renew unless turned off in your iTunes Account Settings at least 24 hours before current period ends. You can go to your iTunes Account settings to manage your subscription and turn off auto-renew. Your iTunes Account will be charged when the purchase is confirmed. If you subscribe before your free trial ends, the rest of your free trial period will be forfeited as soon as your purchase is confirmed.

Privacy Policy & Terms of Use:

Legal Disclaimer

This app and any information given by it or by Zen Labs Fitness are for educational purposes only. They are not intended nor implied to be a substitute for professional medical advice. You should always consult your healthcare provider before beginning any fitness program.

What’s New

Version 2.20

◎ Music player library optimizations
◎ Track your progress and achievements across the Zen Labs network!
◎ More minor bug fixes and optimization

Our community is our number one priority. We answer each and every email. Most of our updates have been suggestions from our community. Questions? Comments? Suggestions? See why our community has made us the #1 5K training app. contactus@zenlabsfitness.com

Ratings and Reviews

4.6 out of 5
784 Ratings

784 Ratings

00RunneR00 ,

Excellent apps!

The zen apps are very well made. The programs are easy to follow and progressive. I’m a huge fan so far! I’m using C25K, the push-ups app, the pull-ups app, and the squat app. I’m going to try the 7 min workout app soon. It’s nice that zen labs has such diversity in the apps they offer.

Dr. Dres shreds ,

Dishonest about Updates

The app functions quite well and custom-fits programs based on your fitness level at the time you begin. I had been enjoying it and making gains and made the one-time purchase to access the pull-up application.

In any case, this morning when I went to train, the app had been updated and I was essentially locked out and forced to pay again to a more expensive plan simply to continue. Despite what I felt was a dishonest move, I considered it, but the update is buggy and won’t even allow me to try the “free trial” of the latest version. I have reached an impasse with this app!

Oge Vader ,

Needs to deal better with incomplete workouts

To the developers: if you are working this program, you are, inevitably, going to hit a sticking point and have to repeat a workout until you can complete it. The app needs to deal with this. I should be able to attempt a workout, record what I was able to do, have the app keep track, and not remind me the next day to workout again. In other words, there needs to be something between “I never even attempted this workout” and “I successfully completed all reps and all sets and I ready to move to the next day”.

Developer Response ,

Hi there! We are very sorry about what you have experienced and would love to help you with this issue. Would you mind sharing a little bit more info via contactus@zenlabsfitness.com. Hope to hear from you soon!


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App Privacy

The developer, Zen Labs, 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 Not Linked to You

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

  • Contact Info
  • Usage Data
  • Diagnostics

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


  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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