Comparison

Flat Pattern & Bend Calculator vs Sheet Metal Master

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Flat Pattern & Bend Calculator

Calculate precise flat pattern dimensions for various fabricated metal components, from simple bends to complex shapes like elbows, lobsterbacks, and cones. This tool assists fabricators, welders, and engineers in generating accurate layouts for piping, ducting, and pressure vessels.

Highlights
  • Flat pattern calculations for bends, elbows, tees, cones
  • Supports complex shapes: truncated cones, pyramids, screw flights
  • Transition layouts: round-to-square, square-to-round
  • Fast, reliable, and accurate results
  • Unique and copyright-safe solutions
Features
Read full description

Quickly and accurately calculate flat pattern dimensions for a wide range of fabricated components. From simple bends to complex transitions, this app helps fabricators, welders, and engineers generate precise flat layouts for elbows, lobsterback bends, frustum cones, truncated pipes, and more. Advanced triangulation methods make it easy to handle screw flights, angled pipe cuts, pyramids, and other complex shapes. Key Features: * Flat pattern calculations for bends, elbows, tees, cones, and pipe intersections * Supports advanced shapes: truncated cones, pyramids, screw flights * Transition layouts: round-to-square, square-to-round, rectangle-to-round * Fast, reliable, and accurate results for metal fabrication workflows Ideal For: * Pressure vessel and tank fabrication * Piping, ducting, welding, and insulation * Industrial, structural, and mechanical fabrication * Process equipment design and layout work Note: All designs, calculations, and layouts are originally created by our team to ensure you receive fully unique and copyright-safe solutions. 
Information about the auto-renewable nature of the subscription. Confirm subscription: Payment will be charged to iTunes Account at confirmation of purchase. Manage subscriptions: Users can manage or unsubscribe in iTunes & App Store account management in the phone system settings. Auto-renewal: Apple iTunes account will be charged for renewal within 24-hours prior to the end of the current subscription period. To cancel the renewal, please turn off auto-renew manually at least 24-hours before the end of the period. No cancellation of the current subscription is allowed during the active subscription period. You can go to the Account Settings to cancel the renewal before the trial ends. The current free trial will be forfeited when you purchase a subscription to the premium version before the trial period ends. By using the app, you confirm that you acknowledge and accept our Privacy Policy and Terms of Service: Privacy Policy: https://sites.google.com/view/privacy-policy1331/privacy Terms of Service: https://sites.google.com/view/privacy-policy1331/terms

About

Sheet Metal Master

Features
Read full description

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

Flat Pattern & Bend Calculator4 screens
Sheet Metal Master3 screens

Verdict

The call

The clearest difference is iOS requirement: Flat Pattern & Bend Calculator at 15.0 against Sheet Metal Master's 17.0. On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Flat Pattern & Bend Calculator sells 2 in-app purchases, starting at $4.99 per month and Sheet Metal Master sells 1 in-app purchase, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Flat Pattern & Bend Calculator ships an update every 4 months, Sheet Metal Master every 5 months. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

Scorecard1 real difference · 8 level
Flat Pattern & Bend Calculator versus Sheet Metal Master: the parameters behind the verdict, then further details
ParameterFlat Pattern & Bend CalculatorSheet Metal Master
PriceFreeFree
Rating4.3 (4 ratings) — better—
Number of ratings4 — better—
Update frequencyEvery 4 months — betterEvery 5 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size16 MB7 MB
Age rating4+4+
DeveloperAdityaKumar Patel磊 高

In-app purchases

2 purchases

Flat Pattern & Bend Calculator

Subscriptions2
  • Premium Monthly Access$4.991 Month
  • Premium Yearly Access3 Days trial$29.991 Year
1 purchases

Sheet Metal Master

Subscriptions1
  • SheetMetal Master$4.991 Month

Questions

Is Flat Pattern & Bend Calculator free?
Flat Pattern & Bend Calculator is free to download, with in-app purchases available.
Is Sheet Metal Master free?
Sheet Metal Master is free to download, with in-app purchases available.
Do Flat Pattern & Bend Calculator or Sheet Metal Master have ads?
Neither Flat Pattern & Bend Calculator nor Sheet Metal Master shows ads.
Which is updated more often, Flat Pattern & Bend Calculator or Sheet Metal Master?
Flat Pattern & Bend Calculator ships an update every 4 months, and Sheet Metal Master every 5 months. Most recently, Flat Pattern & Bend Calculator was updated on October 30, 2026 and Sheet Metal Master on November 5, 2026.

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