# Plumbing Formulator vs Pipe Fitting

The clearest difference is ads: Plumbing Formulator at none against Pipe Fitting's shown. Plumbing Formulator also leads on monetization model (free vs free with in-app purchases). Pipe Fitting's advantage is update cadence (every 5 days vs every 2 months) and review sentiment (33% vs 9%). On price, rating, in-app purchases and device support there is nothing between them.

Both are free to download. Plumbing Formulator sells 4 one-off in-app purchases and Pipe Fitting sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Plumbing Formulator against 4.6 for Pipe Fitting. That said, the two scores are not equally well evidenced: Pipe Fitting has 116 ratings behind it against 7, so its average is the more settled of the two. Written reviews are what separate them: 9% of Plumbing Formulator's written reviews are positive against 33% of Pipe Fitting's.

Plumbing Formulator ships an update every 2 months, Pipe Fitting every 5 days. The most recent releases landed on August 23, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Plumbing Formulator | Pipe Fitting |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (7 ratings)](https://appshunter.io/ios/app/plumbing-formulator/id303497783/reviews) | [4.6 (116 ratings)](https://appshunter.io/ios/app/pipe-fitting/id6743724584/reviews) |
| Number of ratings | 7 | **116** |
| Positive reviews | 9.1% of reviews | **33.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 123 MB | 42 MB |
| Requires iOS | 18.6 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [xNeat.com](https://appshunter.io/developer/327498295) |

## What reviewers say

### Plumbing Formulator

[App page](https://appshunter.io/ios/app/plumbing-formulator/id303497783)

This professional calculator app provides over 200 formulas, calculators, and reference materials for plumbers, HVAC technicians, and mechanical contractors. It covers a wide range of calculations for water flow, piping, drainage, water heaters, pumps, and more, all in one pocket-sized tool.

**Highlights:** Over 200 formulas and calculators, Water flow and supply calculations, Pipe and piping calculations, Drainage and venting calculations, Water heater and pump calculations, Reference charts and code books, Pipe cut list optimizer

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $1.99 | one-time |
| Pro Purchase | $3.99 | one-time |
| Starter | $5.99 | one-time |
| Growth | $9.99 | one-time |


### Pipe Fitting

[App page](https://appshunter.io/ios/app/pipe-fitting/id6743724584)

This tool provides precise pipe layout calculations for professionals in welding and fabrication. It offers various offset and fitting calculators, along with data tools for custom angles and triangle solutions. Easily switch between imperial and metric units for field or shop use.

**Highlights:** Offset calculators (basic, rolling, parallel), Back-to-back fitting solutions, Elbow miter cut and triangle solver, Imperial and metric unit switching, Designed for iPhone and iPad

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pipe Fitting | $4.99 | per 7 days |
| Pipe Fitting | $39.99 | per year |


## Frequently asked questions

### Is Plumbing Formulator free?

Plumbing Formulator is free to download, with in-app purchases available.

### Is Pipe Fitting free?

Pipe Fitting is free to download, with in-app purchases available.

### Which has better reviews, Plumbing Formulator or Pipe Fitting?

Plumbing Formulator and Pipe Fitting are both rated 4.6 out of 5 on the App Store, from 7 and 116 ratings respectively.

### Do Plumbing Formulator or Pipe Fitting have ads?

Pipe Fitting shows ads; Plumbing Formulator does not.

### Which is updated more often, Plumbing Formulator or Pipe Fitting?

Plumbing Formulator ships an update every 2 months, and Pipe Fitting every 5 days. Most recently, Plumbing Formulator was updated on August 23, 2026 and Pipe Fitting on September 19, 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.*