# V.O2 vs Runtools Calc

The clearest difference is in-app purchases: Runtools Calc at none against V.O2's 17. Runtools Calc also leads on review sentiment (100% vs 71%). V.O2's advantage is ratings volume (6.3K vs 5) and update cadence (weekly vs fortnightly). On price, rating, ads and device support there is nothing between them.

Both are free to download. V.O2 sells 16 in-app purchases, starting at $12.99 per month. Runtools Calc asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for V.O2 against 5.0 for Runtools Calc. That said, the two scores are not equally well evidenced: V.O2 has 6.3K ratings behind it against 5, 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 100% of Runtools Calc's.

V.O2 ships an update weekly, Runtools Calc fortnightly. The most recent releases landed on October 29, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | V.O2 | Runtools Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (6.3K ratings)](https://appshunter.io/ios/app/vo2-running-coach/id977666802/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/runtools-calc/id6758685205/reviews)** |
| Number of ratings | **6.3K** | 5 |
| Positive reviews | 71.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 142 MB | 1 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [The Run SMART Project, LLC](https://appshunter.io/developer/973571013) | [Ladarius tellis](https://appshunter.io/developer/1871800577) |

## What reviewers say

### V.O2

[App page](https://appshunter.io/ios/app/vo2-running-coach/id977666802)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Adaptive Training Subscription | $12.99 | per month |
| Adaptive Training - Annual | $99.99 | per year |
| Base/Fitness - 8 weeks | $44.99 | one-time |
| Half Marathon - 12 weeks | $54.99 | one-time |
| 10 Km - 12 weeks | $54.99 | one-time |
| 5 Km - 12 weeks | $54.99 | one-time |
| 1500m - 12 weeks | $54.99 | one-time |
| 3 Km - 12 weeks | $54.99 | one-time |
| Marathon - 15 weeks | $69.99 | one-time |
| Half Marathon - 15 weeks | $69.99 | one-time |
| Marathon - 18 weeks | $79.99 | one-time |
| Half Marathon - 18 weeks | $79.99 | one-time |
| Jack's Elite Marathon - 18wks | $79.99 | one-time |
| Jack's First Marathon - 18wks | $79.99 | one-time |
| Jack's Boston Marathon - 18wks | $94.99 | one-time |
| Marathon - 24 weeks | $99.99 | one-time |

**What reviewers like**

- 👍 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

**What reviewers complain about**

- 🐛 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

**Reported bugs**

- 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**

- 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


### Runtools Calc

[App page](https://appshunter.io/ios/app/runtools-calc/id6758685205)

This app simplifies running calculations for athletes and coaches. It accurately computes splits, pace, and performance metrics in a clear format, offering VO₂ max calculations and preset race distances. Train smarter with precise data without unnecessary complexity.

**Highlights:** Calculate splits for any distance and total time, View pace in multiple units (min/mi, min/km, mph, km/h), Accurate pace formatting, Preset distances for common races, VO₂ calculator with fitness insight, Clean, readable layout for quick reference

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is V.O2 free?

V.O2 is free to download, with in-app purchases available.

### Is Runtools Calc free?

Runtools Calc is free to download, with no in-app purchases.

### Which has better reviews, V.O2 or Runtools Calc?

Runtools Calc is rated higher. V.O2 averages 4.9 out of 5 from 6.3K ratings, while Runtools Calc averages 5.0 from 5 ratings.

### Do V.O2 or Runtools Calc have ads?

Neither V.O2 nor Runtools Calc shows ads.

### Which is updated more often, V.O2 or Runtools Calc?

V.O2 ships an update weekly, and Runtools Calc fortnightly. Most recently, V.O2 was updated on October 29, 2026 and Runtools Calc on October 13, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*