# Calcula Keyboard vs PDF Toolbox

The clearest difference is iOS requirement: PDF Toolbox at 13.0 against Calcula Keyboard's 18.0. 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 | Calcula Keyboard | PDF Toolbox |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Size | 2 MB | 32 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [锦珍 黄](https://appshunter.io/developer/1731622169) | [Changsha Fugui Bamboo Network Technology Co., Ltd.](https://appshunter.io/developer/1458061020) |

## What reviewers say

### Calcula Keyboard

[App page](https://appshunter.io/ios/app/calcula-keyboard/id6764356974)

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

**In-app purchases:** none


### PDF Toolbox

[App page](https://appshunter.io/ios/app/pdf-toolboxpdf-editor-and-convert/id6786572422)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calcula Keyboard free?

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

### Is PDF Toolbox free?

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

### Do Calcula Keyboard or PDF Toolbox have ads?

Neither Calcula Keyboard nor PDF Toolbox 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.*