# Pypley vs Pipe Flow Liquid Pipe Diameter

The clearest difference is price: Pipe Flow Liquid Pipe Diameter at Free against Pypley's $2.99. Pipe Flow Liquid Pipe Diameter also leads on rating (4.6 vs 1.0) and ratings volume (5 vs 1). Pypley's advantage is in-app purchases (none vs 1). On update cadence, ads and device support there is nothing between them.

Pipe Flow Liquid Pipe Diameter is free to download; Pypley costs $2.99 up front. Pipe Flow Liquid Pipe Diameter sells 1 one-off in-app purchase. Pypley asks for nothing beyond the download.

Pipe Flow Liquid Pipe Diameter holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: Pipe Flow Liquid Pipe Diameter has 5 ratings behind it against 1, so its average is the more settled of the two.

Pypley ships an update every 3 weeks, Pipe Flow Liquid Pipe Diameter fortnightly. The most recent releases landed on October 8, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Pypley | Pipe Flow Liquid Pipe Diameter |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/pypley/id1540444278/reviews) | **[4.6 (5 ratings)](https://appshunter.io/ios/app/pipe-flow-liquid-pipe-diameter/id1582795461/reviews)** |
| Number of ratings | 1 | **5** |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 4 MB | 67 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ali Mohammed](https://appshunter.io/developer/1540444280) | [Pipe Flow Software](https://appshunter.io/developer/1193064957) |

## What reviewers say

### Pypley

[App page](https://appshunter.io/ios/app/pypley/id1540444278)

This app calculates flow rate, pressure drop, and pump performance for circular pipe systems. It supports custom pumps and fittings, and allows for unit conversions between Metric and US Imperial. Ideal for hydraulic and process engineers for early-stage design and quick estimations.

**Highlights:** Flow rate and pressure drop calculation, Customizable pump and fitting database, Metric/Imperial unit conversion, Pump performance curve plotting, Cavitation risk assessment (NPSH), Reynolds number and friction factor calculation

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Pypley free?

Pypley costs $2.99, with no in-app purchases.

### Is Pipe Flow Liquid Pipe Diameter free?

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

### Which has better reviews, Pypley or Pipe Flow Liquid Pipe Diameter?

Pipe Flow Liquid Pipe Diameter is rated higher. Pypley averages 1.0 out of 5 from 1 ratings, while Pipe Flow Liquid Pipe Diameter averages 4.6 from 5 ratings.

### Do Pypley or Pipe Flow Liquid Pipe Diameter have ads?

Neither Pypley nor Pipe Flow Liquid Pipe Diameter shows ads.

### Which is updated more often, Pypley or Pipe Flow Liquid Pipe Diameter?

Pypley ships an update every 3 weeks, and Pipe Flow Liquid Pipe Diameter fortnightly. Most recently, Pypley was updated on October 8, 2026 and Pipe Flow Liquid Pipe Diameter on October 11, 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.*