Comparison

Half Marathon 13.1 Trainer vs Firebird Pilates

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

Head to head
About

Half Marathon 13.1 Trainer

This app guides beginners through a 14-week program to train for a half marathon using a run-walk method. It offers audio coaching, progress tracking, and community support to help users complete their first 13.1-mile race.

Highlights
  • 14-week run-walk training program
  • Audio coach and alerts
  • Run mapping
  • Health app integration
  • Community forums
  • Music integration
Features
Read full description

■ The Official Half Marathon Trainer App ■ Official partners and the ONLY C25K (Couch to 5K) app featured on FITBIT and SAMSUNG smart watches! ■ Featured on The New York Times, Los Angeles Times, The Washington Post, The Guardian, The Huffington Post, Men's Fitness, Forbes, Mashable, Glamour Magazine, Popsugar Fitness, CBS News, NBC News, Macworld, Cosmopolitan, Lifehacker, WebMD, and many more! From the same makers of the #1 C25K® Trainer app, Half Marathon Trainer follows the same successful recipe to create an easy simple 13.1 (21k) program. Ideal for first-time beginners and those who are new to running a half marathon. The program uses a blend of running and power walking in training and racing. You’ll soon be able to run-walk the entire half marathon. ≈ Free Trial ≈ ◉ Train the first week for free! ◉ Train to complete a full 13.1 (21k) half marathon using a RUN/WALK ratio ≈ Real-Life Inspirational Transformations ≈ ◎ Over 175,000 Likes and 1500 Success Photos at facebook.com/c25kfree ◎ Our community inspires one another (and inspires us!) everyday. Hear some of their amazing stories. This proven 14 week plan is designed for beginners. The run/walk breaks help make the full marathon less grueling and reduces the overall impact and risk of injury. Don’t think that just because walking is involved that your time will be slower or that you'll be accomplishing less. Many veteran runners have posted personal best times after switching to this run walk method! Using a ratio of running and walking will better manage your fatigue and give you the muscle resource and mental confidence to handle the later parts of the race. Turn on our award winning music and just press start! Our audio coach will guide you through your run! It's that easy! ≈ Less is More ≈ ◎ Easy to learn. Just press start! ◎ Ideal for beginners. ◎ 14 weeks total. ≈ Features ≈ ◉ Proven 14 week half marathon training run-walk program (1st week free) ◉ Convenient audio coach and alerts ◉ Map your run at the end of your workout! ◉ Light and dark modes ◉ Health app integration ◉ Free iPad integration for indoor treadmills ◉ Integrated with Facebook, Twitter, and Instagram ◉ Access to our forums with thousands of veterans and newcomers starting the app. Join the community and meet other runners! ≈ 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 running apps ◉ Unlock calories, distance, Apple watch integration, and more ◉ Full access to C25K, 10K, 13.1, and 26.2 programs ◉ 4 apps for the price of 1! One subscription, multiple apps! Questions/comments? Email us at contactus@zenlabsfitness.com or visit us at www.zenlabsfitness.com. ≈ Connect ≈ Facebook: @C25Kfree Twitter: @C25Kfree Instagram: @officialc25k Hashtag: #C25K Zen Labs is a proud supporter of the National Breast Cancer Coalition. breastcancerdeadline2020.org 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/ Apple Standard Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Legal Disclaimer This app and any information given by it or by Zen Labs LLC are for educational purposes only. You should always consult your healthcare provider before beginning any fitness program. C25K® is a registered trademark of Zen Labs LLC

About

Firebird Pilates

Features
Read full description

Download the Firebird Pilates app to easily book classes and manage your profile. With the app, you can: - Sign up with us - Book classes or join the waiting list - Manage your bookings - Communicate directly with us - Customize your profile and preferences - Receive push notifications about important updates and changes - Sync your calendar Stay up to date and never miss important information about your training.

Screenshots

Half Marathon 13.1 Trainer4 screens
Firebird Pilates4 screens

Verdict

The call

The clearest difference is in-app purchases: Firebird Pilates at none against Half Marathon 13.1 Trainer's 5. Firebird Pilates also leads on ads (none vs shown). Half Marathon 13.1 Trainer's advantage is device support (4 vs 2). On price, update cadence 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. Half Marathon 13.1 Trainer sells 5 in-app purchases, starting at $4.99 per month. Firebird Pilates asks for nothing beyond the download.

UpkeepUpdate frequency

Half Marathon 13.1 Trainer ships an update every 6 weeks, Firebird Pilates every 2 months. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
Half Marathon 13.1 Trainer versus Firebird Pilates: the parameters behind the verdict, then further details
ParameterHalf Marathon 13.1 TrainerFirebird Pilates
PriceFreeFree
Rating4.7 (5.6K ratings) — better—
Positive reviews55.7% of reviews—
Number of ratings5.6K — better—
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPod
Requires iOS14.0 — better15.0
Further details — not scored
Size319 MB15 MB
Age rating4+4+
DeveloperZen LabsTrainin

Bugs and requests

Half Marathon 13.1 Trainer

Reported bugs

3 issues
  • App crashes or freezes during workouts
  • Inconsistent distance and time tracking
  • Syncing issues with Apple Watch

Requested features

4 requests
  • Option to view GPS route history
  • Ability to customize training days and schedule
  • Integration with more fitness tracking devices
  • Detailed performance metrics and analytics

Firebird Pilates

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

Half Marathon 13.1 Trainer

Subscriptions4
  • Zen Unlimited Pass Monthly1 Month trial$4.991 Month
  • Unlock Your Potential7 Days trial$29.993 Months
  • Unlock Your Potential1 Month trial$29.993 Months
Show 1 more
  • Zen Unlimited Pass Annual7 Days trial$74.991 Year
One-time1
  • Unlock Workout List$0.99
None

Firebird Pilates

No in-app purchases

Questions

Is Half Marathon 13.1 Trainer free?
Half Marathon 13.1 Trainer is free to download, with in-app purchases available.
Is Firebird Pilates free?
Firebird Pilates is free to download, with no in-app purchases.
Do Half Marathon 13.1 Trainer or Firebird Pilates have ads?
Half Marathon 13.1 Trainer shows ads; Firebird Pilates does not.
Which is updated more often, Half Marathon 13.1 Trainer or Firebird Pilates?
Half Marathon 13.1 Trainer ships an update every 6 weeks, and Firebird Pilates every 2 months. Most recently, Half Marathon 13.1 Trainer was updated on November 3, 2026 and Firebird Pilates on October 25, 2026.

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