Comparison

V.O2 vs Endorphins Running

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

Head to head
About

V.O2

This app provides adaptive training plans and personalized coaching for runners of all levels. It assesses your fitness, offers custom paces, and syncs with popular devices. Train intelligently to achieve measurable improvements and become your best runner.

Highlights
  • Adaptive training plans
  • VDOT fitness assessment
  • Personalized training paces
  • Sync with Apple Health, Coros, Garmin, Strava
  • Real-time guidance on Apple Watch, Coros, Garmin
  • Training adaptation based on improvement
  • Coach communication and training adjustments
Features
Read full description

Coaching app for athletes looking to take their running to the next level. How it works Athletes: Get an invite from a coach or choose one coaching option. • Adaptive Trainer (14-Day Free Trial) • Goal Race Plan • Match with a Private Coach Coaches: Start your 30-day free trial and learn how to manage your athletes at https://vdoto2.com/vdotcoach Popular Features • Assess your current running fitness (VDOT) • Built-in personalized training paces • Sync training calendar with GPS data from Apple Health, Coros, Garmin or Strava • Sync workouts/pace targets to Apple Watch, Coros or Garmin for real-time guidance • Adapt your training based on your improvement • Work with your coach, communicate and adjust training Truly Personalized Unlike most running apps, VDOT knows you. It understands the type of runner you are, what you're training for, and how to maximize your efforts. It also gives you more control over your training, leveraging your feedback to deliver real-time data which fine tunes your training and leads to continuous progression. With fully automated, truly personalized and highly-adaptive training, VDOT helps you achieve measurable improvement — all in an effort to make you the best runner you can be. Intelligent Training With a focus on training over tracking and coaching over running, VDOT offers access to the highest quality, Olympic-style training for runners of all levels-right from any mobile device. Designed to help runners train correctly and more intelligently, VDOT elicits maximum benefit while reducing the required effort. These high-quality workouts promote healthy, responsible, and beneficial sessions while simultaneously preventing overtraining. Olympic Pedigree V.O2 was built from the foundation of a scientifically-validated training methodology. Based on former Olympian, author, and legendary running coach Jack Daniels’ exercise science principles, the methodology not only benefits runners of all ages and abilities when it comes to improving their running fitness but it also serves as the best measure of running economy across a variety of runners and events, making it an ideal way to compare performances. High-school, college, Olympic and non-elite runners have all trained, ran, and succeeded with the VDOT methodology. -”Dr. Jack Daniels has had a bigger influence on training-for-running than anyone. He might be considered the Albert Einstein of the sport." - Runner’s World Magazine

About

Endorphins Running

This app provides science-backed, personalized training plans for runners of all levels, from beginners to marathoners. It offers expert coaching, real-time progress tracking, and integrates with popular wearables. Users can also join a large community for in-person training events and support.

Highlights
  • Personalized adaptive training plans
  • Real-time progress tracking
  • Expert coaching and support
  • 1500+ community events
  • Wearable device integration
  • Strength and recovery programs
Features
Read full description

Reach your next finish line with Endorphins — the top-rated training app powered by science, built by world-class coaches, and backed by the largest run community in the country. Whether you’re running your first 5K or chasing a Boston Qualifier, Endorphins gives you personalized plans, real-time progress tracking, expert coaching, and an in person community of 1500 events to help get you there. WHY THOUSANDS OF RUNNERS RUN & TRAIN WITH ENDORPHINS: 1) Personalized Coaching Plans We build your training plan around you—your pace, your race, your goals. Whether it's a 5K, 10K, half, full, or ultra, your plan adapts as you go. 2) 1500 Community Events A Year Train with other runners who share the same goals as you 3) Train Smarter with Wearables Sync your Garmin, COROS, or Strava to track runs in real time. We use your data to adjust your plan and optimize every workout. 4) Strength + Recovery Built In Our strength programs compliment your running schedule for optimal improvements and gains. 5) Real Coaches. Real Results. Our team has trained thousands of runners—from first-timers to sub-elites. You’re never more than a message away from expert support. JOIN THE LARGEST RUN COMMUNITY IN AMERICA: 1) In-Person Energy We host 1,500+ free group runs a year in 12+ cities. From long runs to shakeouts, connect with others who share the same goals and values as you. 2) Community Benefits Endorphins members get access to drops, exclusive partner benefits, and race-weekend events. 3) Track Progress + Stay Accountable From weekly goals to post-run recaps, we keep you on track and connected to your training—day in, day out. 4) Built to Grow With You As your goals evolve, so does your training. Whether you’re starting from scratch or going sub-3, we’ve got the plan. PLANS FOR EVERY GOAL: First-time 5K to your next marathon PR Strength + mobility for runners Recovery programs post-race or post-injury And more, always evolving COMPATIBLE WITH: Garmin, COROS, Strava, and more. ENDORPHINS PREMIUM: Unlock the full experience with a 7-day free trial. Train smarter with adaptive plans, real-time sync, and exclusive coaching content. $20/month or $120/year — cancel anytime. Subscriptions auto-renew. Manage in your iTunes settings. APPLE HEALTH INTEGRATION: Endorphins uses your health data for accurate heart rate, distance, and pace tracking when using Apple Watch. 18+ ONLY: Endorphins is for adults 18+. Accounts may be removed if underage use is detected. Apple's standard license agreement applies to Endorphins Premium purchases: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

V.O24 screens
Endorphins Running4 screens

Verdict

The call

V.O2 and Endorphins Running both sit at 4.9 stars, but that hides the real split: 99% of Endorphins Running's written reviews are positive against 71% of V.O2's. V.O2's advantage is update cadence (every 6 days vs every 2 weeks) and ratings volume (6.2K vs 879). On price, rating, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. V.O2 sells 16 in-app purchases, starting at $12.99 per month and Endorphins Running sells 4 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for V.O2 against 4.9 for Endorphins Running. That said, the two scores are not equally well evidenced: V.O2 has 6.2K ratings behind it against 879, so its average is the more settled of the two. Written reviews are what separate them: 71% of V.O2's written reviews are positive against 99% of Endorphins Running's.

UpkeepUpdate frequency

V.O2 ships an update every 6 days, Endorphins Running every 2 weeks. Both last shipped on September 26, 2026.

Scorecard3 real differences · 7 level
V.O2 versus Endorphins Running: the parameters behind the verdict, then further details
ParameterV.O2Endorphins Running
PriceFreeFree
Rating4.9 (6.2K ratings)4.9 (879 ratings)
Positive reviews70.7% of reviews98.6% of reviews — better
Number of ratings6.2K — better879
Update frequencyEvery 6 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS16.616.4 — better
Further details — not scored
Size144 MB177 MB
Age rating4+12+
DeveloperThe Run SMART Project, LLCEndorphins Running LLC

Customer experience

V.O2

All ratings6,205 ratings
Positive97.6%
Neutral0.9%
Negative1.5%
Written reviews174 reviews
Positive70.7%
Neutral8.0%
Negative21.3%

Endorphins Running

All ratings879 ratings
Positive98.6%
Neutral0.1%
Negative1.3%
Written reviews418 reviews
Positive98.6%
Neutral0.2%
Negative1.2%

User reviews

V.O2

From 6.2K App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Great integration with Garmin watches
  • 💡 Excellent for coaching and athlete communication
  • 👍 Fantastic adaptive programming and training plans
  • 👍 Seamless sync with Garmin and other platforms

Room to improve

  • 🐛 Issues with syncing to Garmin and other platforms
  • 🐛 Inconsistent performance and bugs
  • 🐛 Difficulty editing or moving workouts
  • 🐛 Inaccurate elevation and GPS tracking
  • 🔍 Limited customization and preset workout options

Endorphins Running

From 879 App Store ratings

What we love

  • 🚀 Seamless Strava integration
  • 👍 Personalized training plans
  • 🌟 Excellent community features
  • 💪 Helped improve running performance
  • 🤝 Great for meeting like-minded runners

Bugs and requests

V.O2

Reported bugs

4 issues
  • Apple Watch app issues and lack of functionality
  • Problems with syncing Garmin runs to the correct workouts
  • Inconsistent elevation and GPS data
  • Bugs and crashes when using the app

Requested features

6 requests
  • Ability to duplicate and edit workouts
  • Improved Apple Watch and Health app integration
  • More advanced adaptive training and automation
  • Expanded cross-training and workout modalities
  • Better user interface and workflow for coaches
Show 1 more
  • Keyword-based search for notes and workouts

Endorphins Running

No bugs or feature requests surfaced in reviews.

In-app purchases

16 purchases

V.O2

Subscriptions2
  • Adaptive Training Subscription14 Days trial2 variants$12.991 Month
  • Adaptive Training - Annual14 Days trial$99.991 Year
One-time14
  • Base/Fitness - 8 weeks$44.99
  • Half Marathon - 12 weeks$54.99
  • 10 Km - 12 weeks$54.99
Show 11 more
  • 5 Km - 12 weeks$54.99
  • 1500m - 12 weeks$54.99
  • 3 Km - 12 weeks$54.99
  • Marathon - 15 weeks$69.99
  • Half Marathon - 15 weeks$69.99
  • Marathon - 18 weeks$79.99
  • Half Marathon - 18 weeks$79.99
  • Jack's Elite Marathon - 18wks$79.99
  • Jack's First Marathon - 18wks$79.99
  • Jack's Boston Marathon - 18wks$94.99
  • Marathon - 24 weeks$99.99
4 purchases

Endorphins Running

Subscriptions4
  • Monthly7 Days trial$19.991 Month
  • Monthly$19.991 Month
  • Yearly7 Days trial$119.991 Year
Show 1 more
  • Yearly$119.991 Year

Questions

Is V.O2 free?
V.O2 is free to download, with in-app purchases available.
Is Endorphins Running free?
Endorphins Running is free to download, with in-app purchases available.
Which has better reviews, V.O2 or Endorphins Running?
V.O2 and Endorphins Running are both rated 4.9 out of 5 on the App Store, from 6.2K and 879 ratings respectively.
Do V.O2 or Endorphins Running have ads?
Neither V.O2 nor Endorphins Running shows ads.
Which is updated more often, V.O2 or Endorphins Running?
V.O2 ships an update every 6 days, and Endorphins Running every 2 weeks. Most recently, V.O2 was updated on September 26, 2026 and Endorphins Running on September 26, 2026.

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