# Silverson Conversion Tools vs Cryogenics Pro

The clearest difference is in-app purchases: Silverson Conversion Tools at none against Cryogenics Pro's 3. Silverson Conversion Tools also leads on iOS requirement (8.0 vs 16.0). Cryogenics Pro's advantage is update cadence (every 8 days vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. Cryogenics Pro sells 3 in-app purchases, starting at $0.99 per month. Silverson Conversion Tools asks for nothing beyond the download.

Silverson Conversion Tools ships an update every 6 months, Cryogenics Pro every 8 days. The most recent releases landed on September 17, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Silverson Conversion Tools | Cryogenics Pro |
| --- | --- | --- |
| 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** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 8 days** |
| Monetization | Free | — |
| Size | 9 MB | 54 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Silverson Machines Limited](https://appshunter.io/developer/626189814) | [立中 侯](https://appshunter.io/developer/1532582722) |

## 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


### Cryogenics Pro

[App page](https://appshunter.io/ios/app/cryogenics-pro/id6757348860)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Yearly Subscription | $9.99 | per year |
| Lifecycle purchase. | $29.99 | one-time |


## Frequently asked questions

### Is Silverson Conversion Tools free?

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

### Is Cryogenics Pro free?

Cryogenics Pro is free to download, with in-app purchases available.

### Do Silverson Conversion Tools or Cryogenics Pro have ads?

Neither Silverson Conversion Tools nor Cryogenics Pro shows ads.

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

Silverson Conversion Tools ships an update every 6 months, and Cryogenics Pro every 8 days. Most recently, Silverson Conversion Tools was updated on September 17, 2026 and Cryogenics Pro on September 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.*