# Boiler Calculator vs Piping Engineering Toolbox

The clearest difference is review sentiment: Piping Engineering Toolbox at 50% against Boiler Calculator's 0%. Piping Engineering Toolbox also leads on price (Free vs $3.99) and update cadence (every 3 months vs every 35 months). Boiler Calculator's advantage is in-app purchases (none vs 4). On ads, device support and iOS requirement there is nothing between them.

Piping Engineering Toolbox is free to download; Boiler Calculator costs $3.99 up front. Piping Engineering Toolbox sells 4 in-app purchases, starting at $1.99 per 7 days. Boiler Calculator asks for nothing beyond the download.

Boiler Calculator ships an update every 35 months, Piping Engineering Toolbox every 3 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Boiler Calculator | Piping Engineering Toolbox |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[3.7 (9 ratings)](https://appshunter.io/ios/app/piping-engineering-toolbox/id6654914337/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 35 months | **Every 3 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 2 MB | 61 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) | [Shital Gorasiya](https://appshunter.io/developer/1737199158) |

## What reviewers say

### Boiler Calculator

[App page](https://appshunter.io/ios/app/boiler-calculator-tracecalc/id1449806152)

This utility app helps boilermakers quickly calculate boiler facing areas and trace complex cylindrical curves. It simplifies intricate measurements, saving time and materials for professionals.

**Highlights:** Calculate boiler facing area, Trace cylindrical curves, Handle 90° intersections, Streamline complex measurements, Intuitive user interface, In-app guidance

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

**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 Boiler Calculator free?

Boiler Calculator costs $3.99, with no in-app purchases.

### Is Piping Engineering Toolbox free?

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

### Do Boiler Calculator or Piping Engineering Toolbox have ads?

Neither Boiler Calculator nor Piping Engineering Toolbox shows ads.

### Which is updated more often, Boiler Calculator or Piping Engineering Toolbox?

Boiler Calculator ships an update every 35 months, and Piping Engineering Toolbox every 3 months. Most recently, Boiler Calculator was updated on October 24, 2026 and Piping Engineering Toolbox on October 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.*