# HydroCalc Basic vs PlumbCalc Pro

The clearest difference is device support: HydroCalc Basic at 3 against PlumbCalc Pro's —. HydroCalc Basic also leads on iOS requirement (15.1 vs 17.0). On price and in-app purchases there is nothing between them.

Both are free to download. HydroCalc Basic sells 1 one-off in-app purchase and PlumbCalc Pro sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | HydroCalc Basic | PlumbCalc Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | — |
| Update frequency | Every 11 days | — |
| Size | 35 MB | 3 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Transparent Blue Water LLC](https://appshunter.io/developer/1847968351) | [Yusuf Can Samiloglu](https://appshunter.io/developer/1863275820) |

## What reviewers say

### HydroCalc Basic

[App page](https://appshunter.io/ios/app/hydrocalc-basic/id6752577110)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Flow Units & Ad-Free | $1.99 | one-time |


### PlumbCalc Pro

[App page](https://appshunter.io/ios/app/plumbcalc-pro/id6760953725)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PlumbCalc Pro Monthly | $9.99 | per month |
| PlumbCalc Pro Yearly | $99.99 | per year |


## Frequently asked questions

### Is HydroCalc Basic free?

HydroCalc Basic is free to download, with in-app purchases available.

### Is PlumbCalc Pro free?

PlumbCalc 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.*