Comparison

20 Pull Ups Trainer Challenge vs HIIT & Tabata Interval Timer

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

Head to head
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.

About

HIIT & Tabata Interval Timer

Features
Read full description

Build focused interval workouts for HIIT, Tabata, circuit training, boxing, cardio, home workouts and more. HIIT & Tabata Interval Timer gives you a clear, flexible timer without forcing you into one workout style. Start quickly with a Basic workout or build every phase yourself with the Custom editor. CREATE YOUR WORKOUT - Set prepare, work and rest durations - Choose rounds, sets and optional rest between sets - Build ordered Custom rounds with individual times and exercise names - Add an activity type, intensity and personalized phase icons - Save up to 20 workouts and keep two favorites close at hand - Set separate defaults for Basic and Custom workouts STAY FOCUSED - Large countdown with clear round and set progress - Sound cues that can play alongside your music - Pause, continue, skip or reset at any time - Choose whether a workout pauses when the app is minimized - Keep the screen awake while training PLAN AND REVIEW - Schedule one-time or repeating workout reminders - Open a planned saved workout directly from its reminder - Optionally record completed workouts in the local calendar - Review progress, streaks, training patterns and recent completions MAKE IT YOURS - Light and dark appearance - Seven color themes - Custom workout icons - 29 interface languages, including right-to-left language support - Built-in guidance for the main features Your workouts, plans, preferences and optional history are stored locally on your device. The timer can be used without an account. Internet access may be used to load advertising and privacy choices. HIIT & Tabata Interval Timer is a general fitness tool and does not provide medical advice.

Screenshots

20 Pull Ups Trainer Challenge4 screens
HIIT & Tabata Interval Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: HIIT & Tabata Interval Timer at none against 20 Pull Ups Trainer Challenge's 3. HIIT & Tabata Interval Timer also leads on update cadence (every 3 days vs every 2 months). 20 Pull Ups Trainer Challenge's advantage is ads (none vs shown). On price, device support 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

Both are free to download. 20 Pull Ups Trainer Challenge sells 3 in-app purchases, starting at $4.99 per month. HIIT & Tabata Interval Timer asks for nothing beyond the download.

UpkeepUpdate frequency

20 Pull Ups Trainer Challenge ships an update every 2 months, HIIT & Tabata Interval Timer every 3 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
20 Pull Ups Trainer Challenge versus HIIT & Tabata Interval Timer: the parameters behind the verdict, then further details
Parameter20 Pull Ups Trainer ChallengeHIIT & Tabata Interval Timer
PriceFreeFree
Rating4.6 (891 ratings) — better—
Positive reviews48.5% of reviews—
Number of ratings891 — better—
Update frequencyEvery 2 monthsEvery 3 days — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.015.0 — better
Further details — not scored
Size71 MB29 MB
Age rating4+4+
DeveloperZen LabsToril Lia

Bugs and 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

HIIT & Tabata Interval Timer

Not enough reviews yet to summarise bugs or requests.

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
None

HIIT & Tabata Interval Timer

No in-app purchases

Questions

Is 20 Pull Ups Trainer Challenge free?
20 Pull Ups Trainer Challenge is free to download, with in-app purchases available.
Is HIIT & Tabata Interval Timer free?
HIIT & Tabata Interval Timer is free to download, with no in-app purchases.
Do 20 Pull Ups Trainer Challenge or HIIT & Tabata Interval Timer have ads?
HIIT & Tabata Interval Timer shows ads; 20 Pull Ups Trainer Challenge does not.
Which is updated more often, 20 Pull Ups Trainer Challenge or HIIT & Tabata Interval Timer?
20 Pull Ups Trainer Challenge ships an update every 2 months, and HIIT & Tabata Interval Timer every 3 days. Most recently, 20 Pull Ups Trainer Challenge was updated on November 3, 2026 and HIIT & Tabata Interval Timer on October 31, 2026.

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