# Plumbing Formulator vs EXATON Welding Guide

The clearest difference is review sentiment: EXATON Welding Guide at 100% against Plumbing Formulator's 9%. EXATON Welding Guide also leads on in-app purchases (none vs 4) and rating (5.0 vs 4.6). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Plumbing Formulator sells 4 one-off in-app purchases. EXATON Welding Guide asks for nothing beyond the download.

EXATON Welding Guide holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 7 and 3 respectively. Written reviews point the same way: 9% of Plumbing Formulator's written reviews are positive against 100% of EXATON Welding Guide's.

Plumbing Formulator ships an update every 2 months, EXATON Welding Guide every 3 months. The most recent releases landed on October 31, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Plumbing Formulator | EXATON Welding Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (7 ratings)](https://appshunter.io/ios/app/plumbing-formulator/id303497783/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/exaton-welding-guide/id1076911301/reviews)** |
| Number of ratings | **7** | 3 |
| Positive reviews | 9.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 123 MB | 50 MB |
| Requires iOS | 18.6 | **10.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [ESAB Group Inc](https://appshunter.io/developer/1053463271) |

## 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 |


### EXATON Welding Guide

[App page](https://appshunter.io/ios/app/exaton-welding-guide/id1076911301)

This welding handbook provides essential tools for welders and those interested in welding technology. It includes guides for selecting welding grades, calculating heat input, and evaluating weldability, along with tips for weld planning and details on a full product portfolio.

**Highlights:** Welding grade selection guide, Shielding gas assistance, Ferrite diagram calculator, Heat-input calculator, Weldability evaluation, Weld planning tips, Exaton product portfolio details

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Plumbing Formulator free?

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

### Is EXATON Welding Guide free?

EXATON Welding Guide is free to download, with no in-app purchases.

### Which has better reviews, Plumbing Formulator or EXATON Welding Guide?

EXATON Welding Guide is rated higher. Plumbing Formulator averages 4.6 out of 5 from 7 ratings, while EXATON Welding Guide averages 5.0 from 3 ratings.

### Do Plumbing Formulator or EXATON Welding Guide have ads?

Neither Plumbing Formulator nor EXATON Welding Guide shows ads.

### Which is updated more often, Plumbing Formulator or EXATON Welding Guide?

Plumbing Formulator ships an update every 2 months, and EXATON Welding Guide every 3 months. Most recently, Plumbing Formulator was updated on October 31, 2026 and EXATON Welding Guide on November 2, 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.*