DNT vs Origin Duct Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DNT
This application connects to a proprietary digital scope via Wi-Fi to provide video preview and management of recorded videos and photos. It also offers ballistic calculation settings and basic digital scope functions like video recording control and zeroing.
- Wi-Fi connection to digital scope
- Video preview
- Video recording control
- Zeroing function
- Recorded video/photo management
- Ballistic calculation settings
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The APP can be used to connect to the our digital scope with Wi-Fi (The digital scope is manufactured by us), and has the following main functions. Video preview Basic digital scope functions, include video recording control and zeroing Recorded video/photo management Ballistic calculation settings Note: The digital scope is a pure optical tool, and our APP only do the calculation parameter settings and data management. It does not control the mechanic motion apart from our digital scope of any sort.
Origin Duct Calculator
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Built by installers, for installers. Origin Duct Calculator puts the everyday math of industrial ventilation and dust collection right in your pocket. Whether you're laying out a new system, troubleshooting an existing one, or double-checking numbers on the jobsite, get fast, reliable answers without digging for a chart or a spreadsheet. Developed by Origin Ductworks, an American-made and American-owned manufacturer of clamp-together and flange-together industrial ductwork, this app is backed by decades of hands-on experience designing, installing, and troubleshooting dust collection systems. WHAT'S INSIDE • Duct Velocity: Calculate air velocity from airflow and duct size to make sure your system keeps material moving and avoids settling. • Duct Sizing: Find the right duct diameter for your required CFM and target velocity. • Velocity Pressure: Quickly determine velocity pressure for system design and balancing. • Fan HP Estimator: Estimate the horsepower needed to move your airflow against system resistance. • Circumference & Diameter: Convert between circumference and diameter instantly, perfect for measuring existing pipe in the field. • Rect to Round: Convert rectangular duct dimensions to an equivalent round diameter. WHY ORIGIN • Field-tested expertise from a team with over 25 years in industrial ductwork • Simple, installer-focused design with no clutter • Welded and made in Pennsylvania, USA • Knowledgeable support when you need it From woodshops and grain handling to blast applications and heavy-duty custom systems, Origin Ductworks builds duct for the toughest jobs, and now the tools to design them. Need ductwork for your next project? Visit originduct.com or call 833.467.3163.
Screenshots
Verdict
DNT and Origin Duct Calculator are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
| Parameter | DNT | Origin Duct Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (33 ratings) — better | — |
| Positive reviews | 30.0% of reviews | — |
| Number of ratings | 33 — better | — |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 25 MB | 28 MB |
| Age rating | 17+ | 4+ |
| Developer | DNT Optics, LLC | JEREMIAH RICHARD WANN |
In-app purchases
DNT
No in-app purchases
Origin Duct Calculator
No in-app purchases
Questions
Is DNT free?
Is Origin Duct Calculator free?
Do DNT or Origin Duct Calculator have ads?
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