# Smart Install vs HydroniCalc

The clearest difference is in-app purchases: Smart Install at none against HydroniCalc's 1. Smart Install also leads on iOS requirement (11.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. HydroniCalc sells 1 one-off in-app purchase. Smart Install asks for nothing beyond the download.

## The numbers

| Metric | Smart Install | HydroniCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Size | 57 MB | 7 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Petro Gordiievych](https://appshunter.io/developer/1020141075) | [Eric Chmara](https://appshunter.io/developer/1892404568) |

## What reviewers say

### Smart Install

[App page](https://appshunter.io/ios/app/smart-install/id1582291897)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Smart Install free?

Smart Install is free to download, with no in-app purchases.

### Is HydroniCalc free?

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

### Do Smart Install or HydroniCalc have ads?

Neither Smart Install nor HydroniCalc 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.*