# Unit Converter Pro Calculator vs FluidScan

The clearest difference is ads: FluidScan at none against Unit Converter Pro Calculator's shown. FluidScan also leads on update cadence (every 5 days vs every 3 weeks). Unit Converter Pro Calculator's advantage is iOS requirement (13.0 vs 15.1). On price, in-app purchases and device support there is nothing between them.

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

Unit Converter Pro Calculator ships an update every 3 weeks, FluidScan every 5 days. The most recent releases landed on November 7, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Unit Converter Pro Calculator | FluidScan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Size | 32 MB | 59 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Barnasoba, S.L.](https://appshunter.io/developer/1823395954) | [Scale9dev](https://appshunter.io/developer/1861605142) |

## What reviewers say

### Unit Converter Pro Calculator

[App page](https://appshunter.io/ios/app/unit-converter-pro-calculator/id1488398127)

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

**In-app purchases:** none


### FluidScan

[App page](https://appshunter.io/ios/app/fluidscan/id6781443762)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter Pro Calculator free?

Unit Converter Pro Calculator is free to download, with no in-app purchases.

### Is FluidScan free?

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

### Do Unit Converter Pro Calculator or FluidScan have ads?

Unit Converter Pro Calculator shows ads; FluidScan does not.

### Which is updated more often, Unit Converter Pro Calculator or FluidScan?

Unit Converter Pro Calculator ships an update every 3 weeks, and FluidScan every 5 days. Most recently, Unit Converter Pro Calculator was updated on November 7, 2026 and FluidScan on November 10, 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.*