# Tank Volume Calculator App vs Piping Engineering Toolbox

The clearest difference is rating: Piping Engineering Toolbox at 3.7 against Tank Volume Calculator App's 1.0. Piping Engineering Toolbox also leads on ads (none vs shown) and review sentiment (33% vs 0%). Tank Volume Calculator App's advantage is update cadence (every 3 weeks vs every 3 months). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Tank Volume Calculator App sells 2 in-app purchases, starting at $1.99 per month 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.

Piping Engineering Toolbox holds the better App Store score, 3.7 against 1.0. That said, the two scores are not equally well evidenced: Piping Engineering Toolbox has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Tank Volume Calculator App's written reviews are positive against 33% of Piping Engineering Toolbox's.

Tank Volume Calculator App ships an update every 3 weeks, Piping Engineering Toolbox every 3 months. Both last shipped on November 4, 2026.

## The numbers

| Metric | Tank Volume Calculator App | Piping Engineering Toolbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/tank-volume-calculator-app/id6475638941/reviews) | **[3.7 (9 ratings)](https://appshunter.io/ios/app/piping-engineering-toolbox/id6654914337/reviews)** |
| Number of ratings | 1 | **9** |
| Positive reviews | 0.0% of reviews | **33.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 36 MB | 61 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Valaji Global](https://appshunter.io/developer/1694947440) | [Shital Gorasiya](https://appshunter.io/developer/1737199158) |

## What reviewers say

### Tank Volume Calculator App

[App page](https://appshunter.io/ios/app/tank-volume-calculator-app/id6475638941)

This app precisely calculates the volume of numerous tank shapes, including cylindrical, rectangular, and conical. It supports custom densities and offers output in various units like liters, cubic meters, and gallons. Designed for professionals and enthusiasts, it simplifies complex calculations with a user-friendly interface.

**Highlights:** Diverse tank types (vertical, horizontal, elliptical, etc.), Customizable density input, Multiple output units (liters, m³, gallons, kg), Flexible input unit options (mm, m, ft, in), User-friendly interface, Precision calculation algorithms

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads - Monthly | $1.99 | per month |
| Remove Ads - Yearly | $19.99 | per year |


### 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 Tank Volume Calculator App free?

Tank Volume Calculator App 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.

### Which has better reviews, Tank Volume Calculator App or Piping Engineering Toolbox?

Piping Engineering Toolbox is rated higher. Tank Volume Calculator App averages 1.0 out of 5 from 1 ratings, while Piping Engineering Toolbox averages 3.7 from 9 ratings.

### Do Tank Volume Calculator App or Piping Engineering Toolbox have ads?

Tank Volume Calculator App shows ads; Piping Engineering Toolbox does not.

### Which is updated more often, Tank Volume Calculator App or Piping Engineering Toolbox?

Tank Volume Calculator App ships an update every 3 weeks, and Piping Engineering Toolbox every 3 months. Most recently, Tank Volume Calculator App was updated on November 4, 2026 and Piping Engineering Toolbox on November 4, 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.*