DALC vs EB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DALC
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.
- Estimate ductwork air leakage
- Determine DALT pass/fail
- Combine multiple duct sections
- Calculate total allowable leakage
- Provides suggested leakage classes
- Compliant with industry standards
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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.
EB
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.
- Bluetooth communication with transmitters
- Real-time airflow and temperature data
- Complete traverse data capture
- Data saving to phone
- Email data as text file
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EB-Link enables communication to EBTRON Inc. Gold and Hybrid Series transmitters via a Bluetooth communication link. Real time airflow and temperature data can be read as well as complete traverse data. The data can be saved to the phone and emailed as a txt file.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | DALC | EB |
|---|---|---|
| Price | Free | Free |
| Rating | 2.2 (26 ratings) | 5.0 (7 ratings) — better |
| Positive reviews | 14.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 26 — better | 7 |
| Update frequency | Every 2 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 6.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 10 MB | 63 MB |
| Age rating | 4+ | 4+ |
| Developer | SHEET METAL CONTRACTORS NATIONAL ASSOCIATION, INC. | Ebtron Inc. |
Customer experience
DALC
EB
In-app purchases
DALC
No in-app purchases
EB
No in-app purchases
