# Pypley vs ISIS Steam Tools

The clearest difference is price: ISIS Steam Tools at Free against Pypley's $2.99. ISIS Steam Tools also leads on iOS requirement (8.0 vs 13.0). On ads, in-app purchases and device support there is nothing between them.

ISIS Steam Tools is free to download; Pypley costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Pypley | ISIS Steam Tools |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/pypley/id1540444278/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Paid | — |
| Size | 4 MB | 37 MB |
| Requires iOS | 13.0 | **8.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ali Mohammed](https://appshunter.io/developer/1540444280) | [ISIS Fluid Control Ltd](https://appshunter.io/developer/1694352066) |

## 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


### ISIS Steam Tools

[App page](https://appshunter.io/ios/app/isis-steam-tools/id6450681297)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pypley free?

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

### Is ISIS Steam Tools free?

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

### Do Pypley or ISIS Steam Tools have ads?

Neither Pypley nor ISIS Steam Tools shows ads.

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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.*