# Ductulator vs Smart Maximo Mobile FM

The clearest difference is update cadence: Ductulator at weekly against Smart Maximo Mobile FM's every 6 weeks. Smart Maximo Mobile FM's advantage is iOS requirement (11.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Ductulator ships an update weekly, Smart Maximo Mobile FM every 6 weeks. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Ductulator | Smart Maximo Mobile FM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/ductulator/id1528030964/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 6 weeks |
| Monetization | Free | — |
| Size | 14 MB | 72 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Simon Leroux](https://appshunter.io/developer/1513421859) | [Smartech](https://appshunter.io/developer/1316700203) |

## What reviewers say

### Ductulator

[App page](https://appshunter.io/ios/app/ductulator/id1528030964)

This app provides a simple and efficient tool for calculating the dimensions of square ventilation ducts. It's designed for engineers, architects, and contractors to generate data for mechanical ventilation, cooling, and HVAC projects. Quickly validate residential and commercial solutions with this easy-to-use calculator.

**Highlights:** Calculate equivalent round diameter of square ducts, Convert square duct dimensions by volume ratio, Provide metric equivalence, Validate residential and commercial solutions, Designed for engineers and architects

**Features:** macOS Compatibility

**In-app purchases:** none


### Smart Maximo Mobile FM

[App page](https://appshunter.io/ios/app/smart-maximo-mobile-fm/id1641694693)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ductulator free?

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

### Is Smart Maximo Mobile FM free?

Smart Maximo Mobile FM is free to download, with no in-app purchases.

### Do Ductulator or Smart Maximo Mobile FM have ads?

Neither Ductulator nor Smart Maximo Mobile FM shows ads.

### Which is updated more often, Ductulator or Smart Maximo Mobile FM?

Ductulator ships an update weekly, and Smart Maximo Mobile FM every 6 weeks. Most recently, Ductulator was updated on November 3, 2026 and Smart Maximo Mobile FM on November 7, 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.*