# VistaCCD vs WHMD2 Management

The clearest difference is iOS requirement: VistaCCD at 8.0 against WHMD2 Management's 17.0. 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.

VistaCCD ships an update fortnightly, WHMD2 Management every 4 weeks. The most recent releases landed on November 1, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | VistaCCD | WHMD2 Management |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 weeks |
| Monetization | Free | — |
| Size | 7 MB | 9 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kal Designs Ltd](https://appshunter.io/developer/521728838) | [Anh Pham](https://appshunter.io/developer/1848515802) |

## What reviewers say

### VistaCCD

[App page](https://appshunter.io/ios/app/vistaccd/id521728835)

This utility app assists engineers in the preliminary design of turbo compressor impellers. It calculates key dimensions and efficiency based on user-defined performance targets and inlet conditions, offering visual feedback for optimization.

**Highlights:** Preliminary turbo compressor impeller design, Key dimensions and efficiency calculation, Meanline design calculation, Reynolds number and tip clearance correction, Visual feedback for optimization, 2D impeller sketch

**Features:** macOS Compatibility

**In-app purchases:** none


### WHMD2 Management

[App page](https://appshunter.io/ios/app/whmd2-management/id6754499502)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is VistaCCD free?

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

### Is WHMD2 Management free?

WHMD2 Management is free to download, with no in-app purchases.

### Do VistaCCD or WHMD2 Management have ads?

Neither VistaCCD nor WHMD2 Management shows ads.

### Which is updated more often, VistaCCD or WHMD2 Management?

VistaCCD ships an update fortnightly, and WHMD2 Management every 4 weeks. Most recently, VistaCCD was updated on November 1, 2026 and WHMD2 Management on October 2, 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.*