# Fluidity vs RunPace

The clearest difference is in-app purchases: RunPace at none against Fluidity's 2. RunPace also leads on update cadence (every 2 days vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Fluidity sells 2 in-app purchases, starting at $4.99 per month. RunPace asks for nothing beyond the download.

Fluidity ships an update every 4 months, RunPace every 2 days. Both last shipped on October 7, 2026.

## The numbers

| Metric | Fluidity | RunPace |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Size | 28 MB | 1 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Adam Ott](https://appshunter.io/developer/1882575657) | [STIAN GAARE VAAGAN](https://appshunter.io/developer/6789667870) |

## What reviewers say

### Fluidity

[App page](https://appshunter.io/ios/app/fluidity-brain-training/id6761082962)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fluidity Premium | $4.99 | per month |
| Fluidity Premium Lifetime | $99.99 | one-time |


### RunPace

[App page](https://appshunter.io/ios/app/runpace-pace-calculator/id6789667868)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fluidity free?

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

### Is RunPace free?

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

### Do Fluidity or RunPace have ads?

Neither Fluidity nor RunPace shows ads.

### Which is updated more often, Fluidity or RunPace?

Fluidity ships an update every 4 months, and RunPace every 2 days. Most recently, Fluidity was updated on October 7, 2026 and RunPace on October 7, 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.*