# Fartlek Interval Trainer vs Runervals

The clearest difference is review sentiment: Runervals at 100% against Fartlek Interval Trainer's 75%. Runervals also leads on iOS requirement (15.0 vs 26.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Fartlek Interval Trainer sells 4 in-app purchases, starting at $0.99 per month and Runervals sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Fartlek Interval Trainer ships an update weekly, Runervals every 10 days. The most recent releases landed on October 9, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Fartlek Interval Trainer | Runervals |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/runervals-interval-running/id1581810400/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 10 days |
| Monetization | Freemium | Free with in-app purchases |
| Size | 85 MB | 6 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Richard English](https://appshunter.io/developer/1537547687) | [Ben Noland](https://appshunter.io/developer/1448188272) |

## What reviewers say

### Fartlek Interval Trainer

[App page](https://appshunter.io/ios/app/fartlek-interval-trainer/id1537547685)

This running app automatically detects spontaneous intervals during Fartlek runs, providing live color-coded feedback on your effort. It also functions as a powerful timer for structured workouts like HIIT and Tabata, offering detailed metrics and syncing with Strava and Apple Health.

**Highlights:** Auto-detection of Fartlek intervals, Live color-coded effort feedback, Structured workout timer (HIIT, Tabata), Detailed interval metrics, Strava and Apple Health integration, Advanced effort level detection

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Annual | $6.99 | per year |
| RemoveAds | $0.99 | one-time |
| Lifetime | $14.99 | one-time |


### Runervals

[App page](https://appshunter.io/ios/app/runervals-interval-running/id1581810400)

This app automatically detects and tracks your running intervals using your device's accelerometer and GPS. It provides detailed training data and saves your workout history. It also integrates with Apple Watch and the Health app.

**Highlights:** Automatic interval detection, GPS and accelerometer tracking, Workout history saving, Apple Watch app, Health app integration, Light and Dark mode

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Unlimited | $2.99 | per month |
| Yearly Unlimited | $12.99 | per year |


## Frequently asked questions

### Is Fartlek Interval Trainer free?

Fartlek Interval Trainer is free to download, with in-app purchases available.

### Is Runervals free?

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

### Do Fartlek Interval Trainer or Runervals have ads?

Neither Fartlek Interval Trainer nor Runervals shows ads.

### Which is updated more often, Fartlek Interval Trainer or Runervals?

Fartlek Interval Trainer ships an update weekly, and Runervals every 10 days. Most recently, Fartlek Interval Trainer was updated on October 9, 2026 and Runervals on September 28, 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.*