# Fartlek vs RunSpan

Fartlek and RunSpan are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Fartlek sells 2 in-app purchases, starting at $4.99 per month and RunSpan sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Fartlek ships an update every 4 days, RunSpan every 3 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Fartlek | RunSpan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 3 days** |
| Size | 29 MB | 7 MB |
| Requires iOS | 18.5 | **18.0** |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Axis SA](https://appshunter.io/developer/1621529800) | [H4IT](https://appshunter.io/developer/6818158081) |

## What reviewers say

### Fartlek

[App page](https://appshunter.io/ios/app/fartlek-interval-run-timer/id6752724674)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly plan | $4.99 | per month |
| Yearly Premium | $29.99 | per year |


### RunSpan

[App page](https://appshunter.io/ios/app/runspan-interval-running/id6818158079)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RunSpan monthly | $0.99 | per month |
| RunSpan yearly | $8.99 | per year |


## Frequently asked questions

### Is Fartlek free?

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

### Is RunSpan free?

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

### Do Fartlek or RunSpan have ads?

Neither Fartlek nor RunSpan shows ads.

### Which is updated more often, Fartlek or RunSpan?

Fartlek ships an update every 4 days, and RunSpan every 3 days. Most recently, Fartlek was updated on October 24, 2026 and RunSpan 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.*