# Lamons ISOTORQUE vs Piping Engineering Toolbox

The clearest difference is review sentiment: Lamons ISOTORQUE at 100% against Piping Engineering Toolbox's 50%. Lamons ISOTORQUE also leads on rating (5.0 vs 3.7) and in-app purchases (none vs 4). Piping Engineering Toolbox's advantage is ratings volume (9 vs 3). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Piping Engineering Toolbox sells 4 in-app purchases, starting at $1.99 per 7 days. Lamons ISOTORQUE asks for nothing beyond the download.

Lamons ISOTORQUE holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 9 respectively. Written reviews point the same way: 100% of Lamons ISOTORQUE's written reviews are positive against 50% of Piping Engineering Toolbox's.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on June 5, 2026 and August 26, 2026 respectively.

## The numbers

| Metric | Lamons ISOTORQUE | Piping Engineering Toolbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/lamons-isotorque/id1501638460/reviews)** | [3.7 (9 ratings)](https://appshunter.io/ios/app/piping-engineering-toolbox/id6654914337/reviews) |
| Number of ratings | 3 | **9** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 46 MB | 61 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [LGC US Asset Holdings, LLC](https://appshunter.io/developer/1499678722) | [Shital Gorasiya](https://appshunter.io/developer/1737199158) |

## What reviewers say

### Lamons ISOTORQUE

[App page](https://appshunter.io/ios/app/lamons-isotorque/id1501638460)

This app calculates torque values for specific gasket brands, considering various sizes, pressure classes, and pipe specifications. It also provides installation instructions for flange isolation kits and modular seals, along with a suggested testing procedure.

**Highlights:** Torque calculation for gasket brands, Customizable friction factor, Flange isolation kit installation instructions, Modular seal installation guide, Suggested isolation test procedure, Distributor locator, Field issue reporting

**Features:** macOS Compatibility

**In-app purchases:** none


### Piping Engineering Toolbox

[App page](https://appshunter.io/ios/app/piping-engineering-toolbox/id6654914337)

This app provides piping engineers with essential tools, dimensions, and standards for design and analysis. It includes calculators, checklists, software shortcuts, and educational resources to streamline work and enhance knowledge.

**Highlights:** Pipe wall thickness calculator, Branch reinforcement calculator, Piping checklists, Fitting dimensions, Software shortcuts (AutoCAD, MicroStation), Piping standards references (ASME, ASTM), Industry blog and quizzes

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $1.99 | per 7 days |
| Monthly Premium | $3.99 | per month |
| Yearly Premium | $7.99 | per year |
| Lifetime Premium | $12.99 | one-time |


## Frequently asked questions

### Is Lamons ISOTORQUE free?

Lamons ISOTORQUE is free to download, with no in-app purchases.

### Is Piping Engineering Toolbox free?

Piping Engineering Toolbox is free to download, with in-app purchases available.

### Which has better reviews, Lamons ISOTORQUE or Piping Engineering Toolbox?

Lamons ISOTORQUE is rated higher. Lamons ISOTORQUE averages 5.0 out of 5 from 3 ratings, while Piping Engineering Toolbox averages 3.7 from 9 ratings.

### Do Lamons ISOTORQUE or Piping Engineering Toolbox have ads?

Neither Lamons ISOTORQUE nor Piping Engineering Toolbox shows ads.

### Which is updated more often, Lamons ISOTORQUE or Piping Engineering Toolbox?

Lamons ISOTORQUE ships an update every 3 months, and Piping Engineering Toolbox every 3 months. Most recently, Lamons ISOTORQUE was updated on June 5, 2026 and Piping Engineering Toolbox on August 26, 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.*