# GOVA Go vs Air Duct Size Calculator

The clearest difference is in-app purchases: GOVA Go at none against Air Duct Size Calculator's 1. GOVA Go also leads on iOS requirement (13.0 vs 18.0). On price there is nothing between them.

Both are free to download. Air Duct Size Calculator sells 1 one-off in-app purchase. GOVA Go asks for nothing beyond the download.

## The numbers

| Metric | GOVA Go | Air Duct Size Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/air-duct-size-calculator/id6761648095/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 4 weeks |
| Monetization | — | Free |
| Size | 4 MB | 3 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [Mohamad Darwich](https://appshunter.io/developer/1435177573) | [Alona Nesterenko](https://appshunter.io/developer/1890650834) |

## What reviewers say

### GOVA Go

[App page](https://appshunter.io/ios/app/gova-go-track/id1663124635)

**In-app purchases:** none


### Air Duct Size Calculator

[App page](https://appshunter.io/ios/app/air-duct-size-calculator/id6761648095)

This tool helps HVAC professionals quickly size ducts, check airflow, and perform pressure calculations. It offers detailed engineering values and supports both imperial and metric units for practical on-site work.

**Highlights:** Duct sizing by velocity or friction, Existing duct analysis, Pressure-drop calculations, Run loss estimation, Round to rectangular conversion, Engineering detail visibility, Imperial and metric unit support

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $3.99 | one-time |


## Frequently asked questions

### Is GOVA Go free?

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

### Is Air Duct Size Calculator free?

Air Duct Size Calculator is free to download, with in-app purchases available.

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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.*