# ADCA Tools vs NPSH Calculator

The clearest difference is price: ADCA Tools at Free against NPSH Calculator's $1.99. ADCA Tools also leads on in-app purchases (none vs 1) and update cadence (daily vs every 4 months). On ads and device support there is nothing between them.

ADCA Tools is free to download; NPSH Calculator costs $1.99 up front. NPSH Calculator sells 1 one-off in-app purchase. ADCA Tools asks for nothing beyond the download.

ADCA Tools ships an update daily, NPSH Calculator every 4 months. The most recent releases landed on September 23, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | ADCA Tools | NPSH Calculator |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 4 months |
| Size | 28 MB | 34 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [VALSTEAM ADCA ENGINEERING, S.A.](https://appshunter.io/developer/1750422422) | [Transparent Blue Water LLC](https://appshunter.io/developer/1847968351) |

## What reviewers say

### ADCA Tools

[App page](https://appshunter.io/ios/app/adca-tools/id6503931944)

**Features:** macOS Compatibility

**In-app purchases:** none


### NPSH Calculator

[App page](https://appshunter.io/ios/app/npsh-calculator/id6756281499)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NPSH Industrial | $4.99 | one-time |


## Frequently asked questions

### Is ADCA Tools free?

ADCA Tools is free to download, with no in-app purchases.

### Is NPSH Calculator free?

NPSH Calculator costs $1.99, and also offers in-app purchases.

### Do ADCA Tools or NPSH Calculator have ads?

Neither ADCA Tools nor NPSH Calculator shows ads.

### Which is updated more often, ADCA Tools or NPSH Calculator?

ADCA Tools ships an update daily, and NPSH Calculator every 4 months. Most recently, ADCA Tools was updated on September 23, 2026 and NPSH Calculator on September 14, 2026.

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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.*