# Pointer Owner vs Air Duct Size Calculator

The clearest difference is in-app purchases: Pointer Owner at none against Air Duct Size Calculator's 1. Pointer Owner also leads on update cadence (every 6 days vs every 4 weeks) and iOS requirement (10.0 vs 18.0). On price, ads and device support there is nothing between them.

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

Pointer Owner ships an update every 6 days, Air Duct Size Calculator every 4 weeks. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Pointer Owner | 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 | No |
| Update frequency | **Every 6 days** | Every 4 weeks |
| Monetization | — | Free |
| Size | 108 MB | 3 MB |
| Requires iOS | **10.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pointer Telocation Ltd.](https://appshunter.io/developer/434384494) | [Alona Nesterenko](https://appshunter.io/developer/1890650834) |

## What reviewers say

### Pointer Owner

[App page](https://appshunter.io/ios/app/pointer-owner/id1354623813)

**Features:** macOS Compatibility

**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 | $1.99 | one-time |


## Frequently asked questions

### Is Pointer Owner free?

Pointer Owner 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.

### Do Pointer Owner or Air Duct Size Calculator have ads?

Neither Pointer Owner nor Air Duct Size Calculator shows ads.

### Which is updated more often, Pointer Owner or Air Duct Size Calculator?

Pointer Owner ships an update every 6 days, and Air Duct Size Calculator every 4 weeks. Most recently, Pointer Owner was updated on October 26, 2026 and Air Duct Size Calculator on October 28, 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.*