# Pipe Flow Liquid Pipe Diameter vs Mechanical Engineering Toolkit

The clearest difference is ads: Pipe Flow Liquid Pipe Diameter at none against Mechanical Engineering Toolkit's shown. Pipe Flow Liquid Pipe Diameter also leads on iOS requirement (11.0 vs 15.0). Mechanical Engineering Toolkit's advantage is rating (4.8 vs 4.6) and ratings volume (64 vs 5). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Pipe Flow Liquid Pipe Diameter sells 1 one-off in-app purchase and Mechanical Engineering Toolkit sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Mechanical Engineering Toolkit holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Mechanical Engineering Toolkit has 64 ratings behind it against 5, so its average is the more settled of the two.

Pipe Flow Liquid Pipe Diameter ships an update fortnightly, Mechanical Engineering Toolkit weekly. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Pipe Flow Liquid Pipe Diameter | Mechanical Engineering Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (5 ratings)](https://appshunter.io/ios/app/pipe-flow-liquid-pipe-diameter/id1582795461/reviews) | **[4.8 (64 ratings)](https://appshunter.io/ios/app/mechanical-engineering-toolkit/id1601099443/reviews)** |
| Number of ratings | 5 | **64** |
| Positive reviews | — | 57.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 67 MB | 40 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Pipe Flow Software](https://appshunter.io/developer/1193064957) | [APPS BAY LIMITED](https://appshunter.io/developer/1599035519) |

## What reviewers say

### Pipe Flow Liquid Pipe Diameter

[App page](https://appshunter.io/ios/app/pipe-flow-liquid-pipe-diameter/id1582795461)

This app calculates the minimum internal pipe diameter required for a specific flow rate and maximum pressure loss. It offers comprehensive results, customizable databases for materials and fluids, and generates professional reports.

**Highlights:** Pipe diameter calculation, Friction loss calculation, Customizable material and fluid databases, Imperial and Metric unit support, Professional Excel and PDF reports, Results verification against published data

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pipe Flow Pipe Diameter | $4.99 | one-time |


### Mechanical Engineering Toolkit

[App page](https://appshunter.io/ios/app/mechanical-engineering-toolkit/id1601099443)

This utility app provides a comprehensive collection of engineering equations and formulas for students and professionals. Easily perform calculations by selecting a formula and inputting variables, with detailed instructions and reference material included.

**Highlights:** Engineering equations and formulas, Mechanics of Material calculations, Theory of Elasticity formulas, Composite Material properties, Reference material, Variable input for calculations

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Pipe Flow Liquid Pipe Diameter free?

Pipe Flow Liquid Pipe Diameter is free to download, with in-app purchases available.

### Is Mechanical Engineering Toolkit free?

Mechanical Engineering Toolkit is free to download, with in-app purchases available.

### Which has better reviews, Pipe Flow Liquid Pipe Diameter or Mechanical Engineering Toolkit?

Mechanical Engineering Toolkit is rated higher. Pipe Flow Liquid Pipe Diameter averages 4.6 out of 5 from 5 ratings, while Mechanical Engineering Toolkit averages 4.8 from 64 ratings.

### Do Pipe Flow Liquid Pipe Diameter or Mechanical Engineering Toolkit have ads?

Mechanical Engineering Toolkit shows ads; Pipe Flow Liquid Pipe Diameter does not.

### Which is updated more often, Pipe Flow Liquid Pipe Diameter or Mechanical Engineering Toolkit?

Pipe Flow Liquid Pipe Diameter ships an update fortnightly, and Mechanical Engineering Toolkit weekly. Most recently, Pipe Flow Liquid Pipe Diameter was updated on October 9, 2026 and Mechanical Engineering Toolkit on October 10, 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.*