Best apps like ITI Calc

2+ similar apps compared and reviewed

4.2 avg rating

2 free apps

Updated August 2026

Calculated Industries

Whether you want more options like ITI Calc or a completely different take on the same concept, our curated list of 2+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.

Top Alternatives to ITI Calc

SMART Union by International Association of Sheet Metal, Air, Rail and Transportation Workers

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3.3(28 ratings)

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Stay informed with union news and important notifications. Access member benefits, local union information, and resources to manage your meeting experience with schedules and maps.

SMACNA Duct-U-Lator by SHEET METAL CONTRACTORS NATIONAL ASSOCIATION, INC.

Size Simple HVAC Duct Runs

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5.0(1 ratings)

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This tool simplifies HVAC duct sizing for professionals. It quickly calculates dimensions for rectangular, round, and oval ducts based on airflow, friction loss, and velocity, ensuring optimal ventilation system performance.