Comparison

Calories vs 20 Pull Ups Trainer Challenge

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Calories

Track your daily calorie intake to manage your weight or stay in shape. Calculate your daily limit using BMR and monitor your BMI to determine if a diet is needed. The app supports metric and imperial units and allows data export via email.

Highlights
  • Daily calorie tracking
  • BMR calculation for daily limit
  • BMI calculation
  • Email data backup
  • Metric/Imperial unit switching
  • iPad multitasking support
  • Apple Watch app
Features
Read full description

Is it time to think about your weight?. If you plan to start a diet or just want to stay in shape this application is for you. Track your daily calories. Set your limit and see whether you can stay below. More features: - Calculate your daily limit with the help of the basal metabolic rate (BMR) method - Calculate your Body Mass Index (BMI) to see whether you should start a diet - E-Mail the data for backup and further processing - switch between metric and imperial units - support for the iPad multitasking (split view, ...) Apple Watch version: - see how much money is left and the limit - watch app and glance interface for a quick lookup

About

20 Pull Ups Trainer Challenge

This app guides users to achieve 20 pull-ups in 6 weeks with a proven program suitable for all fitness levels. It offers voice cues, progress tracking, and motivational features. The first two weeks are free, with subscription options available for full access.

Highlights
  • 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
Features
Read full description

■ 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.

Screenshots

Calories4 screens
20 Pull Ups Trainer Challenge4 screens

Verdict

The call

The clearest difference is price: 20 Pull Ups Trainer Challenge at Free against Calories's $0.99. 20 Pull Ups Trainer Challenge also leads on rating (4.6 vs 1.7) and review sentiment (48% vs 17%). Calories's advantage is in-app purchases (none vs 3) and device support (4 vs 2). On ads and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

20 Pull Ups Trainer Challenge is free to download; Calories costs $0.99 up front. 20 Pull Ups Trainer Challenge sells 3 in-app purchases, starting at $4.99 per month. Calories asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

20 Pull Ups Trainer Challenge holds the better App Store score, 4.6 against 1.7. That said, the two scores are not equally well evidenced: 20 Pull Ups Trainer Challenge has 890 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 17% of Calories's written reviews are positive against 48% of 20 Pull Ups Trainer Challenge's.

UpkeepUpdate frequency

Calories ships an update every 8 months, 20 Pull Ups Trainer Challenge every 2 months. The most recent releases landed on September 20, 2026 and September 26, 2026 respectively.

Scorecard8 real differences · 2 level
Calories versus 20 Pull Ups Trainer Challenge: the parameters behind the verdict, then further details
ParameterCalories20 Pull Ups Trainer Challenge
Price$0.99Free — better
Rating1.7 (3 ratings)4.6 (890 ratings) — better
Positive reviews16.7% of reviews48.5% of reviews — better
Number of ratings3890 — better
Update frequencyEvery 8 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.6 — better16.0
Further details — not scored
Size2 MB71 MB
Age rating4+4+
DeveloperPiet JonasZen Labs

Customer experience

Calories

All ratings3 ratings
Positive0.0%
Neutral33.3%
Negative66.7%
Written reviews6 reviews
Positive16.7%
Neutral16.7%
Negative66.7%

20 Pull Ups Trainer Challenge

All ratings890 ratings
Positive90.3%
Neutral3.0%
Negative6.6%
Written reviews66 reviews
Positive48.5%
Neutral7.6%
Negative43.9%

Bugs and requests

Calories

Not enough reviews yet to summarise bugs or requests.

20 Pull Ups Trainer Challenge

Reported bugs

2 issues
  • App crashes
  • Compatibility issues with older devices

Requested features

3 requests
  • 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

In-app purchases

None

Calories

No in-app purchases

3 purchases

20 Pull Ups Trainer Challenge

Subscriptions3
  • Zen Unlimited Pass Monthly7 Days trial$4.991 Month
  • Zen Power Playlist 3 Months7 Days trial$29.993 Months
  • Zen Unlimited Pass Annual7 Days trial$74.991 Year

Questions

Is Calories free?
Calories costs $0.99, with no in-app purchases.
Is 20 Pull Ups Trainer Challenge free?
20 Pull Ups Trainer Challenge is free to download, with in-app purchases available.
Which has better reviews, Calories or 20 Pull Ups Trainer Challenge?
20 Pull Ups Trainer Challenge is rated higher. Calories averages 1.7 out of 5 from 3 ratings, while 20 Pull Ups Trainer Challenge averages 4.6 from 890 ratings.
Do Calories or 20 Pull Ups Trainer Challenge have ads?
Neither Calories nor 20 Pull Ups Trainer Challenge shows ads.
Which is updated more often, Calories or 20 Pull Ups Trainer Challenge?
Calories ships an update every 8 months, and 20 Pull Ups Trainer Challenge every 2 months. Most recently, Calories was updated on September 20, 2026 and 20 Pull Ups Trainer Challenge on September 26, 2026.

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