# Constropedia Area Volume Calc vs GuardianScan Pro

The clearest difference is device support: Constropedia Area Volume Calc at 3 against GuardianScan Pro's —. Constropedia Area Volume Calc also leads on iOS requirement (13.0 vs 17.6). On price and in-app purchases there is nothing between them.

Both are free to download. Constropedia Area Volume Calc sells 1 one-off in-app purchase and GuardianScan Pro sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Constropedia Area Volume Calc | GuardianScan Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | — |
| Update frequency | Every 19 months | — |
| Size | 40 MB | 5 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Binary And Bricks Pvt Ltd](https://appshunter.io/developer/1587170688) | [Cagatay Gokgoz](https://appshunter.io/developer/1884056859) |

## What reviewers say

### Constropedia Area Volume Calc

[App page](https://appshunter.io/ios/app/constropedia-area-volume-calc/id6504486155)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Area Volume Pro | $0.99 | one-time |


### GuardianScan Pro

[App page](https://appshunter.io/ios/app/guardianscan-pro-pdf-scanner/id6760352821)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GuardianScan Pro Monthly | $3.99 | per month |
| English (U.S.) | $29.99 | per year |
| GuardianScan Pro Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is Constropedia Area Volume Calc free?

Constropedia Area Volume Calc is free to download, with in-app purchases available.

### Is GuardianScan Pro free?

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

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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.*