# Cornell Pump Toolkit vs Airflow CFM Calc HVAC

The clearest difference is price: Cornell Pump Toolkit at Free against Airflow CFM Calc HVAC's $0.99. Cornell Pump Toolkit also leads on in-app purchases (none vs 1) and ads (none vs shown). Airflow CFM Calc HVAC's advantage is update cadence (fortnightly vs every 29 months) and iOS requirement (13.0 vs 15.1). On device support there is nothing between them.

Cornell Pump Toolkit is free to download; Airflow CFM Calc HVAC costs $0.99 up front. Airflow CFM Calc HVAC sells 1 one-off in-app purchase. Cornell Pump Toolkit asks for nothing beyond the download.

Cornell Pump Toolkit ships an update every 29 months, Airflow CFM Calc HVAC fortnightly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Cornell Pump Toolkit | Airflow CFM Calc HVAC |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/cornell-pump-toolkit/id982062017/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 29 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 22 MB | 30 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Cornell Pump Company](https://appshunter.io/developer/879210510) | [Rizvan Adzhoian](https://appshunter.io/developer/1891746079) |

## What reviewers say

### Cornell Pump Toolkit

[App page](https://appshunter.io/ios/app/cornell-pump-toolkit/id982062017)

This utility app helps calculate key centrifugal pump performance metrics like head, suction, and friction loss. It also suggests suitable pumps from a catalog and allows saving and sharing results. It's designed for field use on Apple devices, functioning offline.

**Highlights:** Calculate Total Dynamic Head, Calculate Net Positive Suction Head, Calculate Friction Loss, Suggest pumps from catalog, Save and share calculations, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### Airflow CFM Calc HVAC

[App page](https://appshunter.io/ios/app/airflow-cfm-calc-hvac/id6764647262)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlock | $2.99 | one-time |


## Frequently asked questions

### Is Cornell Pump Toolkit free?

Cornell Pump Toolkit is free to download, with no in-app purchases.

### Is Airflow CFM Calc HVAC free?

Airflow CFM Calc HVAC costs $0.99, and also offers in-app purchases.

### Do Cornell Pump Toolkit or Airflow CFM Calc HVAC have ads?

Airflow CFM Calc HVAC shows ads; Cornell Pump Toolkit does not.

### Which is updated more often, Cornell Pump Toolkit or Airflow CFM Calc HVAC?

Cornell Pump Toolkit ships an update every 29 months, and Airflow CFM Calc HVAC fortnightly. Most recently, Cornell Pump Toolkit was updated on November 1, 2026 and Airflow CFM Calc HVAC on October 31, 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.*