# Caleffi View vs HydroniCalc

The clearest difference is in-app purchases: Caleffi View at none against HydroniCalc's 1. Caleffi View also leads on iOS requirement (15.1 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. Caleffi View asks for nothing beyond the download.

## The numbers

| Metric | Caleffi View | HydroniCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Size | 32 MB | 7 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Caleffi S.p.A](https://appshunter.io/developer/920722440) | [Eric Chmara](https://appshunter.io/developer/1892404568) |

## What reviewers say

### Caleffi View

[App page](https://appshunter.io/ios/app/caleffi-view/id6466146479)

**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 Caleffi View free?

Caleffi View is free to download, with no in-app purchases.

### Is HydroniCalc free?

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

### Do Caleffi View or HydroniCalc have ads?

Neither Caleffi View 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.*