# Watt vs Pipe Sizer

The clearest difference is rating: Pipe Sizer at 5.0 against Watt's 4.7. Pipe Sizer also leads on chart position (#194 vs unranked) and price ($0.99 vs $1.99). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

Watt costs $1.99 and Pipe Sizer $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Pipe Sizer holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 3 respectively.

Watt ships an update every 18 months, Pipe Sizer every 27 months. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Watt | Pipe Sizer |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | [4.7 (3 ratings)](https://appshunter.io/ios/app/watt-power-calculator/id459111718/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/pipe-sizer-water-pipe-sizing/id1576656624/reviews)** |
| Number of ratings | 3 | 3 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 18 months** | Every 27 months |
| Monetization | Paid | Paid |
| Best chart rank | — | **#194** |
| Size | 3 MB | 1 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [LionsApp di Nallbati Elton](https://appshunter.io/developer/432915499) | [Wassim Murr](https://appshunter.io/developer/1474939474) |

## What reviewers say

### Watt

[App page](https://appshunter.io/ios/app/watt-power-calculator/id459111718)

Easily calculate wattage using three different formulas. Input values and get instant results, with options to copy or email your calculations. Features an intuitive design for a smooth and reliable user experience.

**Highlights:** Calculate watt from 3 formulas, Copy and paste results, Send results via email, Formulas always visible, Intuitive graphics, Ease of use

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

**In-app purchases:** none


### Pipe Sizer

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

**Currently charting:** #194 Top Paid · Utilities (US App Store)

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 Watt free?

Watt costs $1.99, with no in-app purchases.

### Is Pipe Sizer free?

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

### Which has better reviews, Watt or Pipe Sizer?

Pipe Sizer is rated higher. Watt averages 4.7 out of 5 from 3 ratings, while Pipe Sizer averages 5.0 from 3 ratings.

### Do Watt or Pipe Sizer have ads?

Neither Watt nor Pipe Sizer shows ads.

### Which is updated more often, Watt or Pipe Sizer?

Watt ships an update every 18 months, and Pipe Sizer every 27 months. Most recently, Watt was updated on October 23, 2026 and Pipe Sizer on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*