# DALC vs EB

The clearest difference is review sentiment: EB at 100% against DALC's 15%. EB also leads on rating (5.0 vs 2.2). DALC's advantage is update cadence (every 2 weeks vs every 3 months) and ratings volume (26 vs 7). On price, ads, in-app purchases and monetization model there is nothing between them.

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

EB holds the better App Store score, 5.0 against 2.2. Both are backed by a comparable volume of ratings — 26 and 7 respectively. Written reviews point the same way: 15% of DALC's written reviews are positive against 100% of EB's.

DALC ships an update every 2 weeks, EB every 3 months. The most recent releases landed on October 8, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | DALC | EB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.2 (26 ratings)](https://appshunter.io/ios/app/dalc/id427624076/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/eb-link/id1254019997/reviews)** |
| Number of ratings | **26** | 7 |
| Positive reviews | 14.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 10 MB | 63 MB |
| Requires iOS | **6.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SHEET METAL CONTRACTORS NATIONAL ASSOCIATION, INC.](https://appshunter.io/developer/427624079) | [Ebtron Inc.](https://appshunter.io/developer/1254019996) |

## What reviewers say

### DALC

[App page](https://appshunter.io/ios/app/dalc/id427624076)

This tool helps engineers, architects, designers, and contractors accurately estimate air leakage from ductwork. It simplifies determining pass/fail for duct air leakage tests and allows combining multiple duct sections for total leakage calculations, adhering to industry standards.

**Highlights:** Estimate ductwork air leakage, Determine DALT pass/fail, Combine multiple duct sections, Calculate total allowable leakage, Provides suggested leakage classes, Compliant with industry standards

**Features:** macOS Compatibility

**In-app purchases:** none


### EB

[App page](https://appshunter.io/ios/app/eb-link/id1254019997)

This app facilitates communication with specific airflow transmitters via Bluetooth. It allows users to view real-time airflow and temperature data, capture complete traverse data, and save it for emailing as a text file.

**Highlights:** Bluetooth communication with transmitters, Real-time airflow and temperature data, Complete traverse data capture, Data saving to phone, Email data as text file

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is DALC free?

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

### Is EB free?

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

### Which has better reviews, DALC or EB?

EB is rated higher. DALC averages 2.2 out of 5 from 26 ratings, while EB averages 5.0 from 7 ratings.

### Do DALC or EB have ads?

Neither DALC nor EB shows ads.

### Which is updated more often, DALC or EB?

DALC ships an update every 2 weeks, and EB every 3 months. Most recently, DALC was updated on October 8, 2026 and EB on September 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.*