DALC

Name: DALC
Rating: 2.2 (26 reviews)
Author: SMACNA

By: SMACNA

Business

Features & Capabilities

This simple to use but effective application is provided by the Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA). This tool allows engineers, architects, designers, and contractors to easily and accurately estimate the leakage of air from ductwork. It also allows a quick and easy way to determine the pass/fail mark for properly specified Duct Air Leakage Tests (DALT).

Users can combine multiple sections of ductwork that vary by size and shape to calculate a total allowable leakage. The application uses the method outlined in SMACNA’s HVAC Air Duct Leakage Manual, and provides suggested leakage classes from SMACNA’s latest edition of the manual. The method used is compliant with ASHRAE 90.1, IECC, IGCC Version 2, IMC and the UMC.

User Growth & Download Statistics

App

By:

SMACNA

Rating:

2.20

(26)

Version:

2.1 Last updated: 2014-11-24

Version code:

837065446

Creation date:

2011-03-31

Compatible devices:

Size:

9.85MB

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-07

Compare stats and ranking:

Ranking

# 345,679 ▲ 722

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

SMACNA

Apple Apps Store

https://apps.apple.com/us/app/dalc/id427624076

User Reviews

Many reviews cite stability and OS-compatibility problems rather than features. The DALC app repeatedly crashes on startup or during input on iPhone/iPad, especially after OS updates, and users can’t proceed past initial setup. Some must resort to the website. A small number still find it handy when it runs, noting some input functions work. Overall, the dominant sentiment is a reliability issue that needs an update to restore basic functionality.

Pros

The app is handy and useful for field work.
Described as a nice, helpful little app in professional contexts (e.g., SMACNA Show).
Some input features reportedly work well when the app is functioning.

Cons

App crashes or won’t launch, making it unusable on iPhone and iPad.
Compatibility problems after OS updates (e.g., iOS 14.6, iPadOS 15.6.1) causing instant crashes.
App resets or boots out during basic data entry and blocks completing tasks.
Some users must use the website because the native app doesn’t function.
Reinstalling or updating does not resolve the issue; crashes persist across devices.