# Interval Runner Basic vs Fartlek Interval Trainer

The clearest difference is in-app purchases: Interval Runner Basic at none against Fartlek Interval Trainer's 4. Interval Runner Basic also leads on review sentiment (100% vs 75%) and iOS requirement (9.0 vs 26.0). Fartlek Interval Trainer's advantage is update cadence (every 9 days vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. Fartlek Interval Trainer sells 4 in-app purchases, starting at $0.99 per month. Interval Runner Basic asks for nothing beyond the download.

Interval Runner Basic ships an update every 5 months, Fartlek Interval Trainer every 9 days. The most recent releases landed on September 18, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Interval Runner Basic | Fartlek Interval Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/interval-runner-basic/id1340293774/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | **100.0% of reviews** | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 9 days** |
| Monetization | **Free** | Freemium |
| Size | 25 MB | 84 MB |
| Requires iOS | **9.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Jane Brown](https://appshunter.io/developer/1103473343) | [Richard English](https://appshunter.io/developer/1537547687) |

## What reviewers say

### Interval Runner Basic

[App page](https://appshunter.io/ios/app/interval-runner-basic/id1340293774)

This app provides a versatile training tool for runners, offering various workout routines like Run-Walk and Fartlek. It tracks progress, displays workouts on a map, and allows pace goal setting. Users can listen to music during workouts and export data for platforms like Strava.

**Highlights:** Multiple running routines (Run-Walk, Fartlek, Pyramid), Workout tracking and mapping, Pace goal setting and feedback, Warm-up and cool-down timers, Music integration, Exportable workout data, Supports kilometers and miles

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Interval Runner Basic free?

Interval Runner Basic is free to download, with no in-app purchases.

### Is Fartlek Interval Trainer free?

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

### Do Interval Runner Basic or Fartlek Interval Trainer have ads?

Neither Interval Runner Basic nor Fartlek Interval Trainer shows ads.

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

Interval Runner Basic ships an update every 5 months, and Fartlek Interval Trainer every 9 days. Most recently, Interval Runner Basic was updated on September 18, 2026 and Fartlek Interval Trainer on September 22, 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.*