0 vs Plank Challenge
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
0
This app guides users through an 8-week program to build strength and stamina, aiming to achieve 200 situps. It offers voice cues, progress tracking, and community sharing features, with a free trial available.
- 8-week training program
- Voice cues for guidance
- Achieve badges and awards
- Social media integration
- Free trial period
- Unlimited access with pass
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■ Join the millions completing the Zen Challenge Series! ■ 0 to 200 Situps in 8 weeks! ■ Featured on Glamour Magazine, Yahoo!’s Appolicious, Popsugar Fitness, Apple’s “What’s Hot”, Apple’s “New & Noteworthy”, and doctor recommended on healthTap! "I've tried tons of different ab workouts, but this one was my favorite. It starts out easy to give you the confidence you need to keep going. Started only being able to do about 20 situps and week 2 is already 25, but the program breaks it into smaller sets and gives you rest breaks to build your stamina gradually. I'm now at 50 situps!" Are you ready for the 200 Situps Challenge? Train your body and build up to completing 200 situps with same people that brought you the OFFICIAL #1 5K Training app C25K®. Using a proven program, you will be able to complete 200 situps after just 8 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 200 situps. ≈ 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.
Plank Challenge
This app guides you through a 5-week program to build up to a 4-minute plank. It requires no equipment and can be done in just 4 minutes daily, with rest days incorporated for recovery. It also includes a bonus push-up progression.
- 5-week structured plank program
- Progressive push-up training
- Daily workout instructions
- Progress tracking
- Apple Music integration
- Distraction-free interface
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Hold a 4-minute plank in just 5 weeks – no gym, no equipment, only a few minutes a day. Plank Challenge is a proven, progressive program that takes you from beginner to a 4-minute plank, step by step. HOW IT WORKS - Train 4 days, rest 3 – your muscles get time to recover and grow stronger - Progressive plan designed to prevent injury - Clear daily instructions and progress tracking - Bonus: build from 1 to 100 push-ups at your own pace WHY PLANKS? Planks strengthen your abs, back and arms at the same time. They're one of the most effective bodyweight exercises for core stability and overall strength. FEATURES - 5-week structured program - Push-up challenge from 1 to 100 - Progress tracking - Apple Music integration – your music resumes automatically after each workout - Simple, distraction-free design FOR BEGINNERS AND RETURNERS Whether you're brand new or getting back into shape, the program meets you where you are. PRO - Ad-free - 4 premium themes - Trophy Room - Advanced statistics - Lifetime access – pay once Join 127,000+ people who have built a stronger core with Plank Challenge. Download now and see what you're capable of.
Screenshots
Verdict
The clearest difference is ads: 0 at none against Plank Challenge's shown. 0 also leads on ratings volume (2.1K vs 472). Plank Challenge's advantage is update cadence (every 3 weeks vs every 2 months). On price, rating, review sentiment and in-app purchases 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
Both are free to download. 0 sells 3 in-app purchases, starting at $4.99 per month and Plank Challenge sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.7 for 0 against 4.7 for Plank Challenge. Both are backed by a comparable volume of ratings — 2.1K and 472 respectively. Written reviews are what separate them: 59% of 0's written reviews are positive against 66% of Plank Challenge's.
0 ships an update every 2 months, Plank Challenge every 3 weeks. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.
| Parameter | 0 | Plank Challenge |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (2.1K ratings) — better | 4.7 (472 ratings) |
| Positive reviews | 58.9% of reviews | 65.7% of reviews — better |
| Number of ratings | 2.1K — better | 472 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 68 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Zen Labs | Bo Kalvslund |
Customer experience
0
Plank Challenge
User reviews
0
From 2.1K App Store ratingsWhat we love
- 👍 Simple and effective
- 🚀 Motivating and inspiring
- 💪 Gradually builds up strength
Room to improve
- 🔒 Locked features after paid purchase
- 💰 Expensive subscription model
- 🔁 Forced to pay again for previously purchased content
Plank Challenge
From 472 App Store ratingsWhat we love
- 👍 Simple and effective
- 💪 Great for plank challenges
- 🎯 Helps build stamina
- ✅ Good for beginners
- ✨ Straightforward design
Room to improve
- 🔇 Music pauses during sets
- 🎵 Lack of in-app music/motivation
- ❓ No clear guidance on plank types
- 🎛️ No timer customization
- 👎 Push-up part lacks challenge
Bugs and requests
0
Reported bugs
2 issues- Timer pauses when switching apps
- Lack of background audio playback
Requested features
3 requests- Ability to adjust workout intensity and rest times
- Option to skip warm-up
- Workout progress tracking improvements
Plank Challenge
Reported bugs
4 issues- App crashes after iOS 13 update
- No times displayed after iOS 13 update
- Audio mutes automatically between active and rest
- App not running after iOS 13 update
Requested features
10 requests- Allow self-designed workouts
- Integrate reminders
- Add in-app music or motivational sounds
- Provide explanation on different plank types
- Include countdowns and motivational cues
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- Suggest exercises for rest periods
- Modern and minimalist design
- Add a training plan for push-ups
- Voice countdown for seconds
- Dark mode option
In-app purchases
0
- 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
Plank Challenge
- Plank Challenge Pro$0.99
Questions
Is 0 free?
Is Plank Challenge free?
Which has better reviews, 0 or Plank Challenge?
Do 0 or Plank Challenge have ads?
Which is updated more often, 0 or Plank Challenge?
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