Comparison

20 Pull Ups Trainer Challenge vs Cylr

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

Cylr

Features
Read full description

Cylr – Echo Bike Training Companion Cylr is a focused training companion built to turn your iPhone into a dedicated performance display for Echo Bike workouts. It delivers clean, real-time data, structured workout tools, and detailed post-workout analysis without unnecessary setup, accounts, or subscriptions. Designed for athletes who train with intent, Cylr helps you see exactly how you’re performing while you ride and understand your workouts after you’re done. REAL-TIME TRAINING DISPLAY Once connected to your Echo Bike over Bluetooth, Cylr displays live workout metrics directly on your iPhone, including calories, distance, pace, watts, and RPM. Metrics update continuously so you can adjust effort, pacing, and intensity in real time. For heart rate tracking, Cylr pairs with Apple Watch or compatible Bluetooth heart rate straps. Heart rate data is shown live during workouts and stored alongside bike metrics for complete session visibility. KEY FEATURES • Live Bluetooth connection to Echo Bike • Real-time display of calories, distance, watts, RPM, and pace • Live heart rate graph with customizable zones • Live power (watts) graph during workouts • Individual statistics for every work and rest interval • Detailed workout history with full metric breakdowns • Automatic workout saving to Apple Health • Portrait and landscape workout views • Zone 2 training mode for steady-state aerobic sessions WORKOUTS & INTERVAL TRAINING Cylr supports both structured and flexible training. Create fully customized interval workouts or choose from preloaded sessions designed for conditioning, endurance, and performance. Custom interval workouts allow you to configure: • Number of rounds • Work duration • Rest duration • Audio cues for interval transitions Each interval is tracked independently, allowing you to review power output, heart rate response, and pacing with precision. This makes it easy to evaluate effort consistency and adjust future workouts based on real data. ZONE-BASED TRAINING & FEEDBACK Cylr supports customizable heart rate zones with color-coded feedback during workouts. Whether you’re targeting aerobic base training or higher-intensity efforts, zone feedback helps keep training aligned with your goals. A dedicated Zone 2 mode is included for athletes focused on steady-state aerobic development and endurance consistency. WORKOUT REVIEW & HISTORY After every workout, Cylr saves a detailed summary so you can review performance over time. See how your power output, heart rate response, and pacing change across intervals and sessions. Workout history makes it easy to: • Compare sessions • Identify trends • Track improvements in power and consistency • Review individual interval performance All workout data remains accessible for long-term progress tracking. BUILT SPECIFICALLY FOR ECHO BIKE Cylr is a companion app built exclusively for Echo Bike workouts. It does not support other exercise bikes or trainers. This focused approach allows Cylr to deliver accurate metrics, stable Bluetooth connectivity, and features designed specifically around Echo Bike performance. APPLE HEALTH & PRIVACY All workouts sync automatically to Apple Health, including calories, distance, heart rate, workout duration, and active energy. Cylr does not require an account and does not collect personal information beyond what is necessary to display and store workout data. Your data stays on your device and within Apple Health. REQUIREMENTS • Echo Bike with Bluetooth capability • iPhone running iOS 17.0 or later • Apple Watch or compatible Bluetooth heart rate strap required for heart rate tracking Cylr is built for athletes who want clear, real-time feedback, structured training tools, and complete visibility into every Echo Bike workout.

Screenshots

20 Pull Ups Trainer Challenge4 screens
Cylr4 screens

Verdict

The call

The clearest difference is in-app purchases: Cylr at none against 20 Pull Ups Trainer Challenge's 3. Cylr also leads on update cadence (every 3 days vs every 2 months). 20 Pull Ups Trainer Challenge's advantage is iOS requirement (16.0 vs 26.1). On price, ads and device support 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. Cylr asks for nothing beyond the download.

UpkeepUpdate frequency

20 Pull Ups Trainer Challenge ships an update every 2 months, Cylr every 3 days. The most recent releases landed on September 17, 2026 and September 22, 2026 respectively.

Scorecard3 real differences · 7 level
20 Pull Ups Trainer Challenge versus Cylr: the parameters behind the verdict, then further details
Parameter20 Pull Ups Trainer ChallengeCylr
PriceFreeFree
Rating4.6 (890 ratings) — better—
Positive reviews48.5% of reviews—
Number of ratings890 — better—
Update frequencyEvery 2 monthsEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS16.0 — better26.1
Further details — not scored
Size71 MB3 MB
Age rating4+4+
DeveloperZen LabsUseful Things LLC

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

Cylr

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

Cylr

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 Cylr free?
Cylr is free to download, with no in-app purchases.
Do 20 Pull Ups Trainer Challenge or Cylr have ads?
Neither 20 Pull Ups Trainer Challenge nor Cylr shows ads.
Which is updated more often, 20 Pull Ups Trainer Challenge or Cylr?
20 Pull Ups Trainer Challenge ships an update every 2 months, and Cylr every 3 days. Most recently, 20 Pull Ups Trainer Challenge was updated on September 17, 2026 and Cylr on September 22, 2026.

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