# Silverson Conversion Tools vs Skopos

The clearest difference is update cadence: Skopos at every 3 weeks against Silverson Conversion Tools's every 6 months. Silverson Conversion Tools's advantage is iOS requirement (8.0 vs 17.0). On price, ads, in-app purchases and device support 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, Skopos every 3 weeks. The most recent releases landed on November 13, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Silverson Conversion Tools | Skopos |
| --- | --- | --- |
| 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 3 weeks** |
| Monetization | Free | — |
| Size | 9 MB | 5 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Silverson Machines Limited](https://appshunter.io/developer/626189814) | [Christos Voutselas](https://appshunter.io/developer/1840179686) |

## 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


### Skopos

[App page](https://appshunter.io/ios/app/skopos-your-osint-tool/id6814401928)

**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 Skopos free?

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

### Do Silverson Conversion Tools or Skopos have ads?

Neither Silverson Conversion Tools nor Skopos shows ads.

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

Silverson Conversion Tools ships an update every 6 months, and Skopos every 3 weeks. Most recently, Silverson Conversion Tools was updated on November 13, 2026 and Skopos on November 10, 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.*