# Silverson Conversion Tools vs GooService Oman

The clearest difference is iOS requirement: Silverson Conversion Tools at 8.0 against GooService Oman's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Silverson Conversion Tools ships an update every 6 months, GooService Oman every 4 months. The most recent releases landed on October 4, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Silverson Conversion Tools | GooService Oman |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/silverson-conversion-tools/id626189811/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 months** |
| Monetization | Free | — |
| Size | 9 MB | 66 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Silverson Machines Limited](https://appshunter.io/developer/626189814) | [Ammar Al Hinai](https://appshunter.io/developer/1589499694) |

## 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


### GooService Oman

[App page](https://appshunter.io/ios/app/gooservice-oman/id6740216257)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Silverson Conversion Tools free?

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

### Is GooService Oman free?

GooService Oman is free to download, with no in-app purchases.

### Do Silverson Conversion Tools or GooService Oman have ads?

Neither Silverson Conversion Tools nor GooService Oman shows ads.

### Which is updated more often, Silverson Conversion Tools or GooService Oman?

Silverson Conversion Tools ships an update every 6 months, and GooService Oman every 4 months. Most recently, Silverson Conversion Tools was updated on October 4, 2026 and GooService Oman on October 14, 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.*