# Syscon FIT System vs Ductulator

The clearest difference is in-app purchases: Syscon FIT System at none against Ductulator's 2. Syscon FIT System also leads on iOS requirement (15.1 vs 17.0). Ductulator's advantage is rating (4.5 vs 4.3). On price, review sentiment, ratings volume and update cadence there is nothing between them.

Both are free to download. Ductulator sells 2 in-app purchases, starting at $4.99 per month. Syscon FIT System asks for nothing beyond the download.

Ductulator holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 16 and 34 respectively. Written reviews point the same way: 60% of Syscon FIT System's written reviews are positive against 67% of Ductulator's.

Syscon FIT System ships an update every 4 months, Ductulator every 8 months. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Syscon FIT System | Ductulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (16 ratings)](https://appshunter.io/ios/app/syscon-fit-system/id1220165862/reviews) | **[4.5 (34 ratings)](https://appshunter.io/ios/app/ductulator-duct-calculator/id6757307937/reviews)** |
| Number of ratings | 16 | **34** |
| Positive reviews | 60.0% of reviews | **66.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 8 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 48 MB | 42 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Syscon Inc.](https://appshunter.io/developer/1090162803) | [Mikhail Nikitin](https://appshunter.io/developer/1826368571) |

## What reviewers say

### Syscon FIT System

[App page](https://appshunter.io/ios/app/syscon-fit-system/id1220165862)

This application enables construction companies to gather essential field data from their crews, including time, job details, equipment rentals, and customer signatures. It ensures accuracy and streamlines operations by integrating with Sage 100 Contractor.

**Highlights:** Collect field data, Track time and cost codes, Manage job information, Record equipment rentals, Capture customer signatures, Integrates with Sage 100 Contractor

**Features:** macOS Compatibility

**In-app purchases:** none


### Ductulator

[App page](https://appshunter.io/ios/app/ductulator-duct-calculator/id6757307937)

This app provides professional HVAC duct sizing and psychrometric calculations in a single tool. It offers detailed calculations for various duct types and materials, along with comprehensive humid air property analysis. Designed for HVAC professionals, it replaces traditional ductulators with accurate digital functionality.

**Highlights:** Duct sizing for round, rectangular, and flexible ducts, Fittings pressure drop calculation, Psychrometric analysis with interactive chart, Supports Imperial and Metric units, Pre-configured velocity limits for application types, Real-time validation warnings

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| premium | $4.99 | per month |
| premium | $29.99 | per year |


## Frequently asked questions

### Is Syscon FIT System free?

Syscon FIT System is free to download, with no in-app purchases.

### Is Ductulator free?

Ductulator is free to download, with in-app purchases available.

### Which has better reviews, Syscon FIT System or Ductulator?

Ductulator is rated higher. Syscon FIT System averages 4.3 out of 5 from 16 ratings, while Ductulator averages 4.5 from 34 ratings.

### Do Syscon FIT System or Ductulator have ads?

Neither Syscon FIT System nor Ductulator shows ads.

### Which is updated more often, Syscon FIT System or Ductulator?

Syscon FIT System ships an update every 4 months, and Ductulator every 8 months. Most recently, Syscon FIT System was updated on October 19, 2026 and Ductulator on October 24, 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.*