Too little checked to say Store information only. We haven’t analysed this app or read its reviews yet.
Not yet tested.
The store currently lists version 1.2.2, updated 2026-10-30.
Store screenshots supplied by the developer.
You already know how to size a duct. This agrees with your wheel, and then answers the part the wheel cannot.
Type the airflow and the friction rate. DuctWise gives you a round size the supply house actually stocks, the velocity that size will really run at, and the static the whole run will cost you — off the ASHRAE friction chart for galvanised round duct, the same chart the ductulator in your door pocket is printed from.
THE PART A WHEEL CANNOT DO
The round size was never the hard part. What fits in a 2x10 joist bay is. Tap once and you get every stocked rectangular size that carries the same air, squarest first, with anything past 4:1 flagged before you order it — and the flat-oval sizes beside them, for the spaces where a rectangle will not go.
It is equal friction, not equal area.…
From the developer’s store description.
For developers and the curious
The evidence, sources, measurements and versions behind every label above.
No review analysis published for this app.
“Not assessed” means we could not measure it. It is never a zero and never a pass.
No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence, not a finding.
Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured
Not yet tested. No analysis has been run for this app, so there is no version or date to report.
Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.
This update is built from your suggestions: Square duct sizing. Size, Fit and Static are now steps of one run, with its settings always in view. A one-tap fix when the size is out of the band. Check duct and More are their own tabs. A Job you can reopen and rename. A 60-second guided first job. Keep them coming: More → Suggest a feature.
Appworthy
ductwise-hvac-duct-calculatorWhat the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.
No itemized purchase list is available for this listing.
Not yet tested. No analysis has been published for this app, so there is no method to describe for it yet. A missing label is not a clean bill of health: it means nothing has been read, not that nothing is wrong.
Write to [email protected], or use the form. Name the finding, the app version and the evidence that needs correcting. Factual corrections are free and never depend on buying anything.