# Hydro Test Pressure vs Pipe Fitting & ASME Toolbox

The clearest difference is price: Pipe Fitting & ASME Toolbox at Free against Hydro Test Pressure's $1.99. Pipe Fitting & ASME Toolbox also leads on update cadence (every 4 months vs every 73 months) and iOS requirement (13.0 vs 18.5). Hydro Test Pressure's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

Pipe Fitting & ASME Toolbox is free to download; Hydro Test Pressure costs $1.99 up front. Pipe Fitting & ASME Toolbox sells 1 one-off in-app purchase. Hydro Test Pressure asks for nothing beyond the download.

Hydro Test Pressure ships an update every 73 months, Pipe Fitting & ASME Toolbox every 4 months. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Hydro Test Pressure | Pipe Fitting & ASME Toolbox |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.9 (21 ratings)](https://appshunter.io/ios/app/pipe-fitting-and-asme-toolbox/id6752763143/reviews)** |
| Number of ratings | — | **21** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 73 months | **Every 4 months** |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 210 MB |
| Requires iOS | 18.5 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Imran Pinjara](https://appshunter.io/developer/1484488781) | [Ashvin Kevadiya](https://appshunter.io/developer/1756324971) |

## What reviewers say

### Hydro Test Pressure

[App page](https://appshunter.io/ios/app/hydro-test-pressure/id1491873084)

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

**In-app purchases:** none


### Pipe Fitting & ASME Toolbox

[App page](https://appshunter.io/ios/app/pipe-fitting-and-asme-toolbox/id6752763143)

Access essential piping engineering data, standards, and smart calculators for professionals and students. Covers ASME standards, pipe and flange dimensions, fitting details, and valve sizes. Includes daily tips and quizzes to enhance knowledge.

**Highlights:** Engineering calculators, Piping data and standards, Pipe dimensions, Flange dimensions, Fitting dimensions, Valve dimensions, Daily tips and quiz

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium | $9.99 | one-time |


## Frequently asked questions

### Is Hydro Test Pressure free?

Hydro Test Pressure costs $1.99, with no in-app purchases.

### Is Pipe Fitting & ASME Toolbox free?

Pipe Fitting & ASME Toolbox is free to download, with in-app purchases available.

### Do Hydro Test Pressure or Pipe Fitting & ASME Toolbox have ads?

Neither Hydro Test Pressure nor Pipe Fitting & ASME Toolbox shows ads.

### Which is updated more often, Hydro Test Pressure or Pipe Fitting & ASME Toolbox?

Hydro Test Pressure ships an update every 73 months, and Pipe Fitting & ASME Toolbox every 4 months. Most recently, Hydro Test Pressure was updated on November 7, 2026 and Pipe Fitting & ASME Toolbox on November 8, 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.*