# E vs VO2 Max Tracker

The clearest difference is in-app purchases: E at none against VO2 Max Tracker's 6. E also leads on iOS requirement (7.0 vs 18.6). VO2 Max Tracker's advantage is update cadence (every 2 weeks vs monthly). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. VO2 Max Tracker sells 6 in-app purchases, starting at $4.99 per 7 days. E asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.0 for E against 4.0 for VO2 Max Tracker. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

E ships an update monthly, VO2 Max Tracker every 2 weeks. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | E | VO2 Max Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/e-running/id818283657/reviews) | [4.0 (1 ratings)](https://appshunter.io/ios/app/vo2-max-tracker-zephyrus/id6450862734/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | **Free** | Freemium |
| Size | 12 MB | 17 MB |
| Requires iOS | **7.0** | 18.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Fitshow (Xiamen) Infomation Technology Co., Ltd.](https://appshunter.io/developer/1099080594) | [Havard Tryman](https://appshunter.io/developer/1662964293) |

## What reviewers say

### E

[App page](https://appshunter.io/ios/app/e-running/id818283657)

Track outdoor exercises with GPS and connect to compatible treadmills via Bluetooth. Record workout history, share fitness data, and enjoy intelligent treadmill features.

**Highlights:** GPS tracking for outdoor exercises, Treadmill compatibility via Bluetooth, Workout history tracking, Fitness data recording, Intelligent treadmill features, Fitness data sharing

**In-app purchases:** none


### VO2 Max Tracker

[App page](https://appshunter.io/ios/app/vo2-max-tracker-zephyrus/id6450862734)

Measure your cardio fitness (VO₂ max) using a treadmill test and track your progress. Create or select from pre-made HIIT workouts, with real-time guidance on target zones. Integrates with Apple Watch and Bluetooth heart rate monitors.

**Highlights:** VO₂ max testing on treadmills, HIIT workout creation and selection, Real-time target zone guidance, Apple Watch and heart rate monitor integration, Workout history with heart rate graphs, iCloud data synchronization

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Weekly) | $4.99 | per 7 days |
| Pro (Monthly) | $7.99 | per month |
| Pro | $8.99 | per 7 days |
| Pro | $24.99 | per year |
| Pro (Yearly) | $24.99 | per year |
| Pro (Yearly) | $59.99 | per year |


## Frequently asked questions

### Is E free?

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

### Is VO2 Max Tracker free?

VO2 Max Tracker is free to download, with in-app purchases available.

### Which has better reviews, E or VO2 Max Tracker?

E and VO2 Max Tracker are both rated 4.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do E or VO2 Max Tracker have ads?

Neither E nor VO2 Max Tracker shows ads.

### Which is updated more often, E or VO2 Max Tracker?

E ships an update monthly, and VO2 Max Tracker every 2 weeks. Most recently, E was updated on October 5, 2026 and VO2 Max Tracker on October 12, 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.*