# Cryogenics Pro vs Process Engineer Calc

The clearest difference is in-app purchases: Process Engineer Calc at none against Cryogenics Pro's 3. On price, update cadence, 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. Process Engineer Calc asks for nothing beyond the download.

Cryogenics Pro ships an update every 8 days, Process Engineer Calc every 10 days. The most recent releases landed on October 2, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Cryogenics Pro | Process Engineer Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 10 days |
| Size | 54 MB | 11 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [立中 侯](https://appshunter.io/developer/1532582722) | [冯泰 蔡](https://appshunter.io/developer/1896641064) |

## What reviewers say

### 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 |


### Process Engineer Calc

[App page](https://appshunter.io/ios/app/process-engineer-calc-lms/id6774295442)

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

**In-app purchases:** none


## Frequently asked questions

### Is Cryogenics Pro free?

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

### Is Process Engineer Calc free?

Process Engineer Calc is free to download, with no in-app purchases.

### Do Cryogenics Pro or Process Engineer Calc have ads?

Neither Cryogenics Pro nor Process Engineer Calc shows ads.

### Which is updated more often, Cryogenics Pro or Process Engineer Calc?

Cryogenics Pro ships an update every 8 days, and Process Engineer Calc every 10 days. Most recently, Cryogenics Pro was updated on October 2, 2026 and Process Engineer Calc on September 25, 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.*