V.O2 vs Williams Pace...
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
Williams Pace...
This app calculates running paces using methods developed by a legendary coach. It helps runners of all levels train effectively for road and track events, drawing on decades of proven performance-enhancing techniques.
- Pace calculation for road and track
- Based on legendary coach's methods
- Training for world-class runners
- Developed by a Bowerman protégé
- Helps break performance barriers
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The Williams Pace Calculator © App is the latest digital version of the road and track running pace calculator that Bill Bowerman, the legendary coach and NIKE co-founder, used for training world-class runners at the University of Oregon and for the Olympic Games. His renowned ‘Men of Oregon’ athletes broke performance barriers, winning a total of 4 NCAA Team Championships and 24 NCAA individual titles. Now Bob Williams, one of the Bowerman protégé, brings you the know-how of pace calculation to you!
Screenshots
Verdict
The clearest difference is price: V.O2 at Free against Williams Pace...'s $4.99. V.O2 also leads on rating (4.9 vs 4.5) and ratings volume (6.2K vs 17). Williams Pace...'s advantage is in-app purchases (none vs 17) and review sentiment (88% vs 71%). On 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
V.O2 is free to download; Williams Pace... costs $4.99 up front. V.O2 sells 16 in-app purchases, starting at $12.99 per month. Williams Pace... asks for nothing beyond the download.
V.O2 holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: V.O2 has 6.2K ratings behind it against 17, so its average is the more settled of the two. Written reviews complicate that: 71% of V.O2's written reviews are positive against 88% of Williams Pace...'s, so the app with the better star average is not the one people write more warmly about.
V.O2 ships an update every 6 days, Williams Pace... monthly. The most recent releases landed on September 26, 2026 and September 10, 2026 respectively.
| Parameter | V.O2 | Williams Pace... |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 4.9 (6.2K ratings) — better | 4.5 (17 ratings) |
| Positive reviews | 70.7% of reviews | 87.5% of reviews — better |
| Number of ratings | 6.2K — better | 17 |
| Update frequency | Every 6 days — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Best chart rank | — | #198 — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 14.5 — better |
| Further details — not scored | ||
| Size | 144 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | The Run SMART Project, LLC | Robert E Williams |
Customer experience
V.O2
Williams Pace...
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 moreShow fewer
- Keyword-based search for notes and workouts
Williams Pace...
Not enough reviews yet to summarise bugs or requests.
In-app purchases
V.O2
- Adaptive Training Subscription14 Days trial2 variants$12.991 Month
- Adaptive Training - Annual14 Days trial$99.991 Year
- Base/Fitness - 8 weeks$44.99
- Half Marathon - 12 weeks$54.99
- 10 Km - 12 weeks$54.99
Show 11 moreShow fewer
- 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
Williams Pace...
No in-app purchases









