# OUTRUN vs CalBud

The clearest difference is ads: OUTRUN at none against CalBud's shown. OUTRUN also leads on device support (3 vs 1) and iOS requirement (15.6 vs 18.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 9, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | OUTRUN | CalBud |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 15 MB | 6 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [calisthenics](https://appshunter.io/developer/1896763703) | [Einat Levy](https://appshunter.io/developer/6782650226) |

## What reviewers say

### OUTRUN

[App page](https://appshunter.io/ios/app/outrun/id6770799913)

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

**In-app purchases:** none


### CalBud

[App page](https://appshunter.io/ios/app/calbud-calorie-tracker/id6782650224)

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

**In-app purchases:** none


## Frequently asked questions

### Is OUTRUN free?

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

### Is CalBud free?

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

### Do OUTRUN or CalBud have ads?

CalBud shows ads; OUTRUN does not.

### Which is updated more often, OUTRUN or CalBud?

OUTRUN ships an update every 3 weeks, and CalBud every 3 weeks. Most recently, OUTRUN was updated on October 9, 2026 and CalBud on October 11, 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.*