# VDOT Running Calculator vs FlexPace Training

The clearest difference is in-app purchases: FlexPace Training at none against VDOT Running Calculator's 2. FlexPace Training also leads on update cadence (monthly vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. VDOT Running Calculator sells 1 one-off in-app purchase. FlexPace Training asks for nothing beyond the download.

VDOT Running Calculator ships an update every 4 months, FlexPace Training monthly. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | VDOT Running Calculator | FlexPace Training |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (1.6K ratings)](https://appshunter.io/ios/app/vdot-running-calculator/id973571014/reviews)** | — |
| Number of ratings | **1.6K** | — |
| Positive reviews | 73.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 38 MB | 34 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [The Run SMART Project, LLC](https://appshunter.io/developer/973571013) | [Blake Runyon](https://appshunter.io/developer/6810411361) |

## What reviewers say

### VDOT Running Calculator

[App page](https://appshunter.io/ios/app/vdot-running-calculator/id973571014)

This app helps runners and coaches calculate training paces, equate race performances, and adjust for environmental factors. Based on decades of scientific research, it provides a VDOT score to measure running ability and compare performances across different distances.

**Highlights:** Calculate time, distance, and race paces, Determine current training paces, Equate race performances across distances, Adjust paces for heat and altitude, Measure running ability with VDOT score

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VDOT Calculator Premium | $8.99 | one-time |

**What reviewers like**

- 🚀 Great tool
- 👍 Simplicity of use
- 👍 Extremely helpful
- 👍 Does its job well
- 👍 Good calculator

**What reviewers complain about**

- 🐛 Crashes
- 🐛 Limits calculations without premium
- 🐛 Doesn't remember previous data
- 🐛 Bugs with custom distances
- 🐛 Can't see definitions

**Reported bugs**

- Crashes when upgrading to premium
- Can't scroll beyond 200/400m results
- Custom distance doesn't support metric

**Requested features**

- Expand time field to support ultras
- Add 6k and 8k distances
- Allow inputting VDOT score directly
- Allow typing in times instead of scrolling


### FlexPace Training

[App page](https://appshunter.io/ios/app/flexpace-training/id6810411359)

**In-app purchases:** none


## Frequently asked questions

### Is VDOT Running Calculator free?

VDOT Running Calculator is free to download, with in-app purchases available.

### Is FlexPace Training free?

FlexPace Training is free to download, with no in-app purchases.

### Do VDOT Running Calculator or FlexPace Training have ads?

Neither VDOT Running Calculator nor FlexPace Training shows ads.

### Which is updated more often, VDOT Running Calculator or FlexPace Training?

VDOT Running Calculator ships an update every 4 months, and FlexPace Training monthly. Most recently, VDOT Running Calculator was updated on November 1, 2026 and FlexPace Training on October 24, 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.*