# Running Speed Calculator vs D.run

The clearest difference is in-app purchases: D.run at none against Running Speed Calculator's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Running Speed Calculator sells 1 one-off in-app purchase. D.run asks for nothing beyond the download.

Running Speed Calculator ships an update every 3 days, D.run every 2 days. The most recent releases landed on October 8, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Running Speed Calculator | D.run |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | **Every 2 days** |
| Size | 4 MB | 2 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [Benjamin Wolff](https://appshunter.io/developer/1661481834) | [PAUL FERNANDO LOUIS RITTER](https://appshunter.io/developer/1895028912) |

## What reviewers say

### Running Speed Calculator

[App page](https://appshunter.io/ios/app/running-speed-calculator/id6445966765)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro version | $2.99 | one-time |


### D.run

[App page](https://appshunter.io/ios/app/drun/id6762822674)

**In-app purchases:** none


## Frequently asked questions

### Is Running Speed Calculator free?

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

### Is D.run free?

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

### Do Running Speed Calculator or D.run have ads?

Neither Running Speed Calculator nor D.run shows ads.

### Which is updated more often, Running Speed Calculator or D.run?

Running Speed Calculator ships an update every 3 days, and D.run every 2 days. Most recently, Running Speed Calculator was updated on October 8, 2026 and D.run on October 2, 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.*