# Layout Calc Pro vs Piping Engineering Toolbox

The clearest difference is update cadence: Layout Calc Pro at weekly against Piping Engineering Toolbox's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Layout Calc Pro sells 7 one-off in-app purchases and Piping Engineering Toolbox sells 4 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Layout Calc Pro ships an update weekly, Piping Engineering Toolbox every 3 months. The most recent releases landed on October 8, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Layout Calc Pro | Piping Engineering Toolbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (9 ratings)](https://appshunter.io/ios/app/piping-engineering-toolbox/id6654914337/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 49 MB | 61 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [思源 李](https://appshunter.io/developer/1704804704) | [Shital Gorasiya](https://appshunter.io/developer/1737199158) |

## What reviewers say

### Layout Calc Pro

[App page](https://appshunter.io/ios/app/layout-calc-pro/id6476074424)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Three Day VIP | $5.00 | one-time |
| 1-Year VIP Membership | $19.99 | one-time |
| 2-Year VIP Membership | $34.99 | one-time |
| 3-Year VIP Membership | $44.99 | one-time |
| 1-Year VIP Membership | $55.00 | one-time |
| 2-Year VIP Membership | $104.99 | one-time |
| 3-Year VIP Membership | $154.99 | one-time |


### 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 Layout Calc Pro free?

Layout Calc Pro is free to download, with in-app purchases available.

### Is Piping Engineering Toolbox free?

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

### Do Layout Calc Pro or Piping Engineering Toolbox have ads?

Neither Layout Calc Pro nor Piping Engineering Toolbox shows ads.

### Which is updated more often, Layout Calc Pro or Piping Engineering Toolbox?

Layout Calc Pro ships an update weekly, and Piping Engineering Toolbox every 3 months. Most recently, Layout Calc Pro was updated on October 8, 2026 and Piping Engineering Toolbox on September 24, 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.*