Triple J Ductwork vs Sheet Metal Master
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Triple J Ductwork
This app allows users to request quotes for custom metal parts, including ductwork and signs. It features a part-picking tool and a space to input specific measurements for fabrication projects.
- Custom part quoting
- Part picking tool
- Measurement specification
- Sheet metal fabrication
- Ductwork services
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Triple J Ductwork in Waterford, Michigan specializing in high quality commercial and residential ductwork, spiral ductwork, custom sheet metal products, metal signs, metal art, and heating and cooling products. Established in 1997 we fabricate metal products for projects of all sizes. This app allows you to obtain a quote for custom parts with a part picking tool and space to specify custom measurements.
Sheet Metal Master
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Sheet Metal Master is an on-device calculation tool for duct fabrication, pipe fitting, and sheet-metal layout. Enter measurable dimensions to preview patterns, define fabrication allowances, save projects, and export DXF files. 15 TASKS • Ductwork: round-to-rectangle, rectangular reducer, 90° round tee, rectangular offset, rectangular miter elbow, and rectangular tee • Pipe and vessel work: oblique round tee, equal-diameter round Y branch, segmented elbow, cone/frustum, oblique-cut pipe, and spherical-head gores • Bending: single bend, double bend, and box bend WORKFLOW • Live result and flat-pattern previews • Welding, riveting, lock-seam, and manual allowances • Save, reopen, and update local projects • Share calculation summaries • Export millimeter-based ASCII R12 DXF files Core calculations run locally on your device. The round Y branch is a field-fit construction. A sphere cannot be flattened without strain, so spherical-head gores are an approximation with a reported boundary-strain value. Always verify material, connection details, and a sample before production cutting. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Triple J Ductwork at none against Sheet Metal Master's 1. Triple J Ductwork also leads on iOS requirement (8.0 vs 17.0). On price, update cadence, ads and device support 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. Sheet Metal Master sells 1 in-app purchase, starting at $4.99 per month. Triple J Ductwork asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on October 26, 2026 and September 23, 2026 respectively.
| Parameter | Triple J Ductwork | Sheet Metal Master |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 5 months | Every 5 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 8.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 24 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | BiznetIS Net Inc | 磊 高 |
In-app purchases
Triple J Ductwork
No in-app purchases
Sheet Metal Master
- SheetMetal Master$4.991 Month
Questions
Is Triple J Ductwork free?
Is Sheet Metal Master free?
Do Triple J Ductwork or Sheet Metal Master have ads?
Which is updated more often, Triple J Ductwork or Sheet Metal Master?
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