# FabCalc: Flat Pattern DXF — Sheet Metal Layout & Unfold

> Sheet Metal Layout & Unfold (iPhone/iPad app by Double Vision USA LLC.)

- Source: https://appshunter.io/ios/app/fabcalc-flat-pattern-dxf/id6781708798 (this page in markdown: same URL + `.md`)
- Developer: [Double Vision USA LLC](https://appshunter.io/developer/1894678139)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 3 MB
- Languages: American English
- Released: 2026-06-24
- Data updated: 2026-09-04
- User reviews in markdown: https://appshunter.io/ios/app/fabcalc-flat-pattern-dxf/id6781708798/reviews.md

## What is FabCalc?

The flat pattern calculator your fab shop needs — cylinders, cone gores, duct wraps, and more. Fully offline. No account. No ads.

Stop laying out cone gores by hand on the table. Stop guessing developed length on a duct wrap. FabCalc generates shop-ready flat pattern drawings and 1:1 DXF files for common fabricated shapes.

WHAT'S INSIDE

• Cylinder wrap — full shell and partial segments
• Half-pipe sleeve — 180° cylinder segments
• Cone / frustum gore — annular sector with slant length and arc development
• Rectangular duct wrap — four-panel strip with bend lines and bend allowance
• Live 2D preview — cut profile, bend lines, roll direction, dimensions
• DXF export — AutoCAD R12 ASCII, layered (CUT, BEND, ROLL, TEXT), 1:1 scale
• PDF job sheet — drawing, inputs, calculated values, notes
• Saved jobs — reopen and edit patterns locally

WHO IT'S FOR

Fabricators, sheet metal workers, pipe fitters, boilermakers, plasma/laser operators, and shop owners who need accurate flat patterns without desktop CAD.

FREE vs PRO

Free forever: all shape inputs, live preview, calculated values, warnings, and DXF cut-file export.
Pro unlocks PDF job sheets and unlimited saved jobs. One-time purchase or subscription.

Subscriptions auto-renew until cancelled. Manage in your Apple ID Subscription Settings.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://doublevision.company/privacy

NO ACCOUNT. NO ADS. NO DATA COLLECTION.
FabCalc works on the layout table, at the plasma table, in the truck. Everything runs locally.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| FabCalc Pro Monthly | $4.99 | per month |
| FabCalc Pro Yearly | $29.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| ShopCalc Pro Lifetime | $129.99 | one-time |
| Fab Shop Bundle | $119.99 | one-time |



## Version history (last 5 releases)

### 1.0.14 — 2026-09-02

Performance improvements and stability updates.

### 1.0.13 — 2026-08-26

Performance and reliability improvements.

### 1.0.12 — 2026-08-19

Performance and reliability improvements.

### 1.0.11 — 2026-08-18

Bug fixes and stability improvements.

### 1.0.7 — 2026-08-01

Performance improvements and stability updates.

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| [Flat Pattern Bend Calculators](https://appshunter.io/ios/app/flat-pattern-bend-calculators/id6744553194) | 3.1 (9) | Free | Utilities |
| [Flat Pattern & Bend Calculator](https://appshunter.io/ios/app/flat-pattern-and-bend-calculator/id6747935750) | 5.0 (2) | Free | Utilities |
| [Sheet Metal Calculator Pro](https://appshunter.io/ios/app/sheet-metal-calculator-pro/id6753674123) | — | Free | Utilities |
| [TalkGPT HandsFree AI - IntCall](https://appshunter.io/ios/app/talkgpt-handsfree-ai-intcall/id6503086302) | — | Free | Utilities |

## More apps by Double Vision USA LLC

- [ShopCalc: Machinist Calculator](https://appshunter.io/ios/app/shopcalc-machinist-calculator/id6762560427)
- [WelderCalc: Welding Calculator](https://appshunter.io/ios/app/weldercalc-welding-calculator/id6763315264)
- [ElectricianCalc NEC Calculator](https://appshunter.io/ios/app/electriciancalc-nec-calculator/id6763315320)
- [BuilderCalc: Deck, Framing](https://appshunter.io/ios/app/buildercalc-deck-framing/id6763315412)
- [DutyDesk](https://appshunter.io/ios/app/dutydesk/id6776941078)
- [ShopCAM: CNC G-Code Generator](https://appshunter.io/ios/app/shopcam-cnc-g-code-generator/id6778277614)

All apps by Double Vision USA LLC: https://appshunter.io/developer/1894678139

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-04.*