# 20 Pull Ups Trainer Challenge — Back Muscle Toner Pullups

> Achieve 20 pull-ups in 6 weeks with a guided fitness program. (iPhone/iPad app by Zen Labs.)

- Source: https://appshunter.io/ios/app/20-pull-ups-trainer-challenge/id848897098 (this page in markdown: same URL + `.md`)
- Developer: [Zen Labs](https://appshunter.io/developer/485971738)
- Category: Health & Fitness, Sports
- Price: Free with in-app purchases
- Rating: 4.60/5 from 886 App Store ratings · 65 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 67 MB
- Languages: American English
- Released: 2014-04-02
- Data updated: 2026-08-27
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/20-pull-ups-trainer-challenge/id848897098/reviews.md

## What is 20 Pull Ups Trainer Challenge?

■ 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
https://forums.zenlabsfitness.com

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: 
https://www.zenlabsfitness.com/privacy-policy/

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.

## Key features

- Achieve 20 pull-ups in 6 weeks
- Program for all fitness levels
- Voice cues for guidance
- Badges and awards for workouts
- Social sharing of progress
- Motivational music

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Zen Unlimited Pass Monthly | $4.99 | per month |
| Zen Unlimited Pass Annual | $74.99 | per year |
| Zen Power Playlist 3 Months | $29.99 | per 3 months |


## What do users think of 20 Pull Ups Trainer Challenge?

Overall sentiment: negative

**Pros**

- 👍 Easy to use
- 🚀 Well-planned app
- 💪 Helps improve pull-ups
- 🎉 Great for military/fitness goals

**Cons**

- 💰 Subscription model change after purchase
- 🔒 Locked out of paid features after update
- 🤔 Unclear progression for beginners
- ⏱️ Timer issues (stops when switching apps)

**Commonly reported bugs**

- App crashes
- Compatibility issues with older devices

**Most requested features**

- Ability to track incomplete workouts
- Option to start at beginner, intermediate, or advanced level
- Ability to combine multiple Zen apps (push-ups, squats, etc.) into circuits

## Recent user reviews (10 of 65)

All indexed reviews: https://appshunter.io/ios/app/20-pull-ups-trainer-challenge/id848897098/reviews.md

### 1/5 — Paid Customer Ignored and Asked to Subscribe Again

*2026-06-15*

I purchased this app years ago as part of a paid bundle and had full access to the features I paid for. After the latest update, the app no longer recognizes my previous purchases and is now prompting me to subscribe to access content I’ve already bought.

I contacted customer support about this issue and never received a reply. I’ve tried restoring my purchases, but the app still fails to acknowledge them. It’s extremely disappointing to see loyal customers treated this way after supporting the app financially from the beginning.

Existing customers should not lose access to their legitimate purchases or be pushed into a recurring subscription model to regain what they already paid for. Until previous purchases are honored and support actually responds to customers, I cannot recommend this app. 1 star.

**Developer response:** We apologize for any frustration you may have experienced with the change to a subscription model. We understand that this can be difficult, and we want to assure you that we made this decision with the best interests of our users in mind. We've added many new features, including music streaming, which we believe enhances the overall user experience. 

Please email us at contactus@zenlabsfitness.com with your original download date receipt, and we’ll certainly do our best to work with you. Thank you for your understanding.

### 1/5 — Used to be free

*2026-02-23, version 2.26*

Used to be a free app on the last platform I used now they want you to sign up for premium after 2 weeks and lock the rest.

### 5/5 — Pull-ups

*2024-12-17*

You do pull ups

**Developer response:** Thank you for your 5-star review!!

### 5/5 — Wonderful

*2024-04-16*

Great 👍🏿!!!

**Developer response:** Thank you so much for your 5-star review!!

### 1/5 — Too many pull ups!

*2023-07-27, version 2.20*

What I love about all of your other apps is that I feel successful right from the beginning. This one is too difficult from the start and I need to cheat.

### 2/5 — Needs to deal better with incomplete workouts

*2022-10-07*

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!

### 2/5 — Subscription won’t sync

*2021-04-14*

Started a Zen Unlimited subscription that is refusing to sync with any app other than the one through which I purchased it.  Hopefully the issue will get resolved before I burn through the free workouts

**Developer response:** Hi, we have fixed this issue in the latest updates. Please email us at contactus@zenlabsfitness.com if you're still having any issues. Apologize for any inconvenience!

### 1/5 — Subscription after purchase?

*2021-03-31, version 1.9.11*

Purchased this app and now after the update I am being forced to subscribe.. no thanks

### 5/5 — Rip-off!

*2021-02-05, version 1.9.10*

I tried the app for free, then bought the full feature option.  Then they updated it so that you have to subscribe to get the full features.  App Store won’t refund since I’ve owned it for 60 days (before the rip-off update), and @zenlabs tells me to go after apple since they cannot help me!  Definition of fraud!!!

### 1/5 — Paid for the app, now they want a subscription fee

*2020-12-28*

To say I am unimpressed would be an understatement. I have no issue paying for an app but why was I not grandfathered into this? Maybe make a new app for your subscription service. What could possibly be gained from a subscription on an app that simply tells wen to perform the same exercise over and over? Would not recommend any Zen labs products, can’t trust they will stand by their you even when you spend the money.

**Developer response:** The subscription allows us to add new apps to the network, add new features to existing apps, and pay a royalty to the composers, authors, publishers, artists, and copyright owners who create the music you love in our streaming services. Subscribers now have access to pro features across all Zen Labs apps and music streaming across them all. One subscription grants full pro access to all apps in our network!

## Frequently asked questions about 20 Pull Ups Trainer Challenge

### What does the 20 Pull Ups Trainer Challenge app do?

This app is designed to help users build strength and stamina to complete 20 consecutive pull-ups within a 6-week period. It uses a proven program that adapts to various fitness levels, from beginners who can't do a single pull-up to more experienced individuals.

### What are the key features of this pull-up training app?

Key features include a structured 6-week program, voice cues to guide workouts, achievement badges and awards, social sharing capabilities, and curated motivational music. The app also offers a free trial period for its initial weeks.

### How much does the 20 Pull Ups Trainer Challenge app cost?

The app offers the first two weeks for free. After the trial, users can access full features through a subscription. Pricing details and terms are available within the app's subscription section.

### Who is the target audience for this app?

This app is intended for anyone looking to improve their upper body strength and specifically increase their pull-up count. It caters to all fitness levels, including those who are new to pull-ups or have some prior experience.

### Can this app help me if I can't do any pull-ups yet?

Yes, the app is designed to assist users who cannot perform a single pull-up. It includes a built-in program specifically to help build the foundational strength required to eventually complete pull-ups.

## Version history (last 5 releases)

### 3.1 — 2026-06-17

◎ Enjoy a faster, cleaner, and more intuitive experience with our all-new modern design.
◎ Your workouts just got smarter. The app can now detect your movements and automatically count reps and track progress during exercises.
◎ Get more accurate workout insights and stay motivated with improved progress tracking.
◎ Performance Improvements & Bug Fixes
◎ We've also made a number of under-the-hood improvements to make the app smoother and more reliable.

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

### 3.0 — 2026-06-08

◎ Enjoy a faster, cleaner, and more intuitive experience with our all-new modern design.
◎ Your workouts just got smarter. The app can now detect your movements and automatically count reps and track progress during exercises.
◎ Get more accurate workout insights and stay motivated with improved progress tracking.
◎ Performance Improvements & Bug Fixes
◎ We've also made a number of under-the-hood improvements to make the app smoother and more reliable.

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

### 2.26 — 2026-02-19

◎ 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

### 2.25 — 2025-12-19

◎ 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

### 2.24 — 2025-07-10

◎ 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

## Apps similar to 20 Pull Ups Trainer Challenge

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Home Workout - No Equipments](https://appshunter.io/ios/app/home-workout-no-equipments/id1313192037) | 4.9 (122,359) | Free | Health & Fitness |
| [Muscle Booster Workout Tracker](https://appshunter.io/ios/app/muscle-booster-workout-tracker/id1446447749) | 4.5 (136,878) | Free | Health & Fitness |
| [Push Ups Trainer Challenge](https://appshunter.io/ios/app/push-ups-trainer-challenge/id690401205) | 4.7 (3,376) | Free | Health & Fitness |
| [Push Up Counter & Tracker](https://appshunter.io/ios/app/push-up-counter-and-tracker/id6470828037) | 4.8 (3,217) | Free | Health & Fitness |
| [Pushes - Your Push-Ups Trainer](https://appshunter.io/ios/app/pushes-your-push-ups-trainer/id1470582373) | 4.6 (558) | Free | Health & Fitness |
| [100 Push Ups: Just 6 Weeks](https://appshunter.io/ios/app/100-push-ups-just-6-weeks/id586139454) | 4.8 (9,397) | Free | Health & Fitness |

## More apps by Zen Labs

- [C25K® 5K Running Coach & Map](https://appshunter.io/ios/app/c25k-5k-running-coach-and-map/id485971733)
- [10K Trainer by C25K®](https://appshunter.io/ios/app/10k-trainer-by-c25k/id511600311)
- [Half Marathon 13.1 Trainer](https://appshunter.io/ios/app/half-marathon-131-trainer/id514647091)
- [Marathon 26.2 Trainer by C25K®](https://appshunter.io/ios/app/marathon-262-trainer-by-c25k/id514662686)
- [Push Ups Trainer Challenge](https://appshunter.io/ios/app/push-ups-trainer-challenge/id690401205)
- [0-200 Situps Trainer Challenge](https://appshunter.io/ios/app/0-200-situps-trainer-challenge/id698136992)

All apps by Zen Labs: https://appshunter.io/developer/485971738

## Related topics

[pull-up](https://appshunter.io/ios/topics/pull-up) · [pull up workout](https://appshunter.io/ios/topics/pull-up-workout) · [pull ups](https://appshunter.io/ios/topics/pull-ups)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*