# Centrifugal Pump Spec vs Pipe Sizer

The clearest difference is price: Pipe Sizer at $0.99 against Centrifugal Pump Spec's $5.99. Centrifugal Pump Spec's advantage is update cadence (every 11 months vs every 27 months) and iOS requirement (14.3 vs 17.6). On ads, in-app purchases and device support there is nothing between them.

Centrifugal Pump Spec costs $5.99 and Pipe Sizer $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Centrifugal Pump Spec ships an update every 11 months, Pipe Sizer every 27 months. The most recent releases landed on May 16, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Centrifugal Pump Spec | Pipe Sizer |
| --- | --- | --- |
| Price | $5.99 | **$0.99** |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/pipe-sizer-water-pipe-sizing/id1576656624/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 months** | Every 27 months |
| Monetization | — | Paid |
| Size | 1 MB | 1 MB |
| Requires iOS | **14.3** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Muralidhar Shenoy](https://appshunter.io/developer/460148822) | [Wassim Murr](https://appshunter.io/developer/1474939474) |

## What reviewers say

### Centrifugal Pump Spec

[App page](https://appshunter.io/ios/app/centrifugal-pump-spec/id482488028)

**Features:** macOS Compatibility

**In-app purchases:** none


### Pipe Sizer

[App page](https://appshunter.io/ios/app/pipe-sizer-water-pipe-sizing/id1576656624)

This utility app assists in selecting appropriate pipe diameters for water systems, supporting both pressure and gravity flow calculations. It offers automatic recommendations based on user-defined limits and incorporates multiple pipe materials and unit systems.

**Highlights:** Pressure pipe sizing, Gravity pipe sizing, Automatic pipe size recommendations, Multiple pipe material support, SI and Imperial units, Hazen-Williams and Manning equations

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

**In-app purchases:** none


## Frequently asked questions

### Is Centrifugal Pump Spec free?

Centrifugal Pump Spec costs $5.99, with no in-app purchases.

### Is Pipe Sizer free?

Pipe Sizer costs $0.99, with no in-app purchases.

### Do Centrifugal Pump Spec or Pipe Sizer have ads?

Neither Centrifugal Pump Spec nor Pipe Sizer shows ads.

### Which is updated more often, Centrifugal Pump Spec or Pipe Sizer?

Centrifugal Pump Spec ships an update every 11 months, and Pipe Sizer every 27 months. Most recently, Centrifugal Pump Spec was updated on May 16, 2026 and Pipe Sizer on September 9, 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.*