# VistaCCD vs Pilotflows

The clearest difference is in-app purchases: VistaCCD at none against Pilotflows's 2. VistaCCD also leads on iOS requirement (8.0 vs 18.2). Pilotflows's advantage is update cadence (every 2 days vs fortnightly). On price, ads and device support there is nothing between them.

Both are free to download. Pilotflows sells 2 in-app purchases, starting at $3.99 per month. VistaCCD asks for nothing beyond the download.

VistaCCD ships an update fortnightly, Pilotflows every 2 days. The most recent releases landed on September 29, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | VistaCCD | Pilotflows |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Free | — |
| Size | 7 MB | 66 MB |
| Requires iOS | **8.0** | 18.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kal Designs Ltd](https://appshunter.io/developer/521728838) | [Pilotflows](https://appshunter.io/developer/1895481688) |

## 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


### Pilotflows

[App page](https://appshunter.io/ios/app/pilotflows-pilot-logbook/id6763770245)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Monthly) | $3.99 | per month |
| Pro (Yearly) | $44.99 | per year |


## Frequently asked questions

### Is VistaCCD free?

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

### Is Pilotflows free?

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

### Do VistaCCD or Pilotflows have ads?

Neither VistaCCD nor Pilotflows shows ads.

### Which is updated more often, VistaCCD or Pilotflows?

VistaCCD ships an update fortnightly, and Pilotflows every 2 days. Most recently, VistaCCD was updated on September 29, 2026 and Pilotflows on October 17, 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.*