# FX1 vs Calibr

The clearest difference is iOS requirement: FX1 at 15.6 against Calibr's 17.5. On price, ads, 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.

## The numbers

| Metric | FX1 | Calibr |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 30 MB | 0 MB |
| Requires iOS | **15.6** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [IDS NEXT Business Solutions](https://appshunter.io/developer/977085415) | [Brainhive Labs Private Limited](https://appshunter.io/developer/1752448517) |

## What reviewers say

### FX1

[App page](https://appshunter.io/ios/app/fx1/id1493938115)

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

**In-app purchases:** none


### Calibr

[App page](https://appshunter.io/ios/app/calibr/id6504481101)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FX1 free?

FX1 is free to download, with no in-app purchases.

### Is Calibr free?

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

### Do FX1 or Calibr have ads?

Neither FX1 nor Calibr shows ads.

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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.*