# Vent Pro - Calculation Tool

> Ventilation ductwork airflow and velocity calculation tool. (iPhone/iPad app by Ralph Romeike.)

- Source: https://appshunter.io/ios/app/vent-pro-calculation-tool/id1507760569 (this page in markdown: same URL + `.md`)
- Developer: [Ralph Romeike](https://appshunter.io/developer/1507760568)
- Category: Productivity, Education
- Price: Free
- Rating: 3.67/5 from 3 App Store ratings
- Age rating: 4+
- Requires: iOS 13.6 · 10 MB
- Languages: English, German
- Released: 2020-04-14
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/vent-pro-calculation-tool/id1507760569/reviews.md

## What is Vent Pro?

Vent Pro offers a quick, reliable and easy way to calculate the airflow or velocity in the duct-work for your ventilation applications.

Calculate the airlow based on the specified cooling or heating requirements or the air exchange rate for industrial and commercial applications.

Do you need a quick overview of the velocity based on the specified airflow? Simply choose the diameter for round ducts according to DIN 24 145 / DIN EN 1506 or for individual rectangular ducts.

Vent Pro is free and available in English, German and Italian. (Other languages in development)

Do you like the app? Then rate us. Your feedback is important to constantly develop the app and adapt it to your needs.

## Key features

- Calculate airflow based on cooling/heating requirements
- Calculate airflow based on air exchange rate
- Determine velocity based on airflow
- Supports round ducts (DIN 24 145 / DIN EN 1506)
- Supports rectangular ducts
- Available in English, German, and Italian


## Frequently asked questions about Vent Pro

### What is Vent Pro used for?

Vent Pro is a tool designed to quickly and reliably calculate airflow or velocity in ductwork for ventilation applications. It helps determine these values based on cooling/heating requirements or air exchange rates for industrial and commercial settings.

### What types of ducts does Vent Pro support?

Vent Pro supports calculations for both round ducts, adhering to DIN 24 145 / DIN EN 1506 standards, and individual rectangular ducts. This covers common ductwork configurations.

### What languages is Vent Pro available in?

Currently, Vent Pro is available in English, German, and Italian. The developer indicates that other languages are in development, suggesting future expansion.

### How often is Vent Pro updated?

The latest version of Vent Pro is 2.02, which was last updated on November 4, 2020. While not frequently updated recently, the developer values user feedback for ongoing development.

### What devices can I use Vent Pro on?

Vent Pro is compatible with Apple devices, including iPhone, iPad, and iPod. It is designed for iOS operating systems.

### What is the age rating for Vent Pro?

Vent Pro has an age rating of 4+, making it suitable for a wide range of users. This indicates it contains no mature content.

### Does Vent Pro have ads?

The provided data does not specify whether Vent Pro contains advertisements. However, it is listed as free with no in-app purchases, which sometimes correlates with ad support.

### What do users think of Vent Pro?

Vent Pro has a rating of 3.7 stars from 3 ratings. This suggests a generally positive but mixed user reception, with room for improvement based on feedback.

## Version history (last 1 release)

### 2.02 — 2020-11-04

Bugfix in the calculation of air quality. Various corrective measures for input masks.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*