# Silverson Conversion Tools vs Tank Volume Calculator App

The clearest difference is rating: Silverson Conversion Tools at 4.7 against Tank Volume Calculator App's 1.0. Silverson Conversion Tools also leads on in-app purchases (none vs 2) and ads (none vs shown). Tank Volume Calculator App's advantage is update cadence (every 3 weeks vs every 6 months). On price 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. Silverson Conversion Tools asks for nothing beyond the download.

Silverson Conversion Tools holds the better App Store score, 4.7 against 1.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Silverson Conversion Tools ships an update every 6 months, Tank Volume Calculator App every 3 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Silverson Conversion Tools | Tank Volume Calculator App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/silverson-conversion-tools/id626189811/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/tank-volume-calculator-app/id6475638941/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 9 MB | 36 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Silverson Machines Limited](https://appshunter.io/developer/626189814) | [Valaji Global](https://appshunter.io/developer/1694947440) |

## What reviewers say

### Silverson Conversion Tools

[App page](https://appshunter.io/ios/app/silverson-conversion-tools/id626189811)

This app provides engineers and operations personnel with tools to calculate the volume of vertical tanks of various shapes and top/bottom styles. It also includes multiple conversion tools for common measurements and a browser for product information.

**Highlights:** Vertical tank volume calculation, Multiple tank shapes and top/bottom styles, Unit conversion tools, Email/Share calculation results, Integrated product browser

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Silverson Conversion Tools free?

Silverson Conversion Tools is free to download, with no in-app purchases.

### Is Tank Volume Calculator App free?

Tank Volume Calculator App is free to download, with in-app purchases available.

### Which has better reviews, Silverson Conversion Tools or Tank Volume Calculator App?

Silverson Conversion Tools is rated higher. Silverson Conversion Tools averages 4.7 out of 5 from 3 ratings, while Tank Volume Calculator App averages 1.0 from 1 ratings.

### Do Silverson Conversion Tools or Tank Volume Calculator App have ads?

Tank Volume Calculator App shows ads; Silverson Conversion Tools does not.

### Which is updated more often, Silverson Conversion Tools or Tank Volume Calculator App?

Silverson Conversion Tools ships an update every 6 months, and Tank Volume Calculator App every 3 weeks. Most recently, Silverson Conversion Tools was updated on October 23, 2026 and Tank Volume Calculator App 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.*