# HydroniCalc vs HydroCalc SHK

HydroniCalc and HydroCalc SHK are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. HydroniCalc 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 | HydroniCalc | HydroCalc SHK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Size | 7 MB | 1 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Eric Chmara](https://appshunter.io/developer/1892404568) | [Piotr Kaminski](https://appshunter.io/developer/6799375980) |

## What reviewers say

### HydroniCalc

[App page](https://appshunter.io/ios/app/hydronicalc/id6796810526)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Calculators | $12.99 | 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 HydroniCalc free?

HydroniCalc 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 HydroniCalc or HydroCalc SHK have ads?

Neither HydroniCalc 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.*