# HydroCalc Basic vs HydroCalc SHK

The clearest difference is iOS requirement: HydroCalc Basic at 15.1 against HydroCalc SHK's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. HydroCalc Basic sells 1 one-off in-app purchase and HydroCalc SHK sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | HydroCalc Basic | HydroCalc SHK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | — |
| Size | 35 MB | 1 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Transparent Blue Water LLC](https://appshunter.io/developer/1847968351) | [Piotr Kaminski](https://appshunter.io/developer/6799375980) |

## 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 |


### HydroCalc SHK

[App page](https://appshunter.io/ios/app/hydrocalc-shk/id6801788464)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HydroCalc Pro | $3.99 | one-time |


## Frequently asked questions

### Is HydroCalc Basic free?

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

### Is HydroCalc SHK free?

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

### Do HydroCalc Basic or HydroCalc SHK have ads?

Neither HydroCalc Basic nor HydroCalc SHK 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.*