# Pypley vs Pipe Flow Liquid Pressure Drop

The clearest difference is price: Pipe Flow Liquid Pressure Drop at Free against Pypley's $2.99. Pipe Flow Liquid Pressure Drop also leads on rating (5.0 vs 1.0) and ratings volume (12 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 Pressure Drop is free to download; Pypley costs $2.99 up front. Pipe Flow Liquid Pressure Drop sells 1 one-off in-app purchase. Pypley asks for nothing beyond the download.

Pipe Flow Liquid Pressure Drop holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: Pipe Flow Liquid Pressure Drop has 12 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 Pressure Drop fortnightly. Both last shipped on November 3, 2026.

## The numbers

| Metric | Pypley | Pipe Flow Liquid Pressure Drop |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/pypley/id1540444278/reviews) | **[5.0 (12 ratings)](https://appshunter.io/ios/app/pipe-flow-liquid-pressure-drop/id1582478584/reviews)** |
| Number of ratings | 1 | **12** |
| 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 | 68 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 Pressure Drop

[App page](https://appshunter.io/ios/app/pipe-flow-liquid-pressure-drop/id1582478584)

This app calculates friction and fitting losses in liquid flow systems using the Darcy-Weisbach equation. It offers extensive databases for fluids, pipes, and fittings, with customizable units and reporting options. Verified against published data, it's designed for engineers needing accurate pressure drop calculations.

**Highlights:** Friction and fitting loss calculations, Darcy-Weisbach equation with Colebrook-White, Integrated databases for fluids, pipes, and fittings, User-definable custom data, 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 Pressure Drop | $4.99 | one-time |


## Frequently asked questions

### Is Pypley free?

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

### Is Pipe Flow Liquid Pressure Drop free?

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

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

Pipe Flow Liquid Pressure Drop is rated higher. Pypley averages 1.0 out of 5 from 1 ratings, while Pipe Flow Liquid Pressure Drop averages 5.0 from 12 ratings.

### Do Pypley or Pipe Flow Liquid Pressure Drop have ads?

Neither Pypley nor Pipe Flow Liquid Pressure Drop shows ads.

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

Pypley ships an update every 3 weeks, and Pipe Flow Liquid Pressure Drop fortnightly. Most recently, Pypley was updated on November 3, 2026 and Pipe Flow Liquid Pressure Drop on November 3, 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.*