Comparison

Flat Pattern Bend Calculator vs Digiduct

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

This app provides accurate flat pattern layouts for complex sheet metal shapes and transitions. It simplifies calculations for cones, frustums, cylinders, and various transition pieces, saving time and reducing errors in fabrication projects.

Highlights
  • Cone calculations
  • Frustum calculations
  • Truncated cylinder layouts
  • Bend allowance calculations
  • Transition piece generation
  • Complex shape patterns
Features
Read full description

Unlock the power of advanced sheet metal calculations right at your fingertips. Flat Pattern Bend Calculator is a comprehensive tool designed for engineers, fabricators, and designers who need quick and accurate flat pattern layouts for a variety of complex shapes and transitions. This app simplifies complex metal sheet calculations, enabling users to accurately calculate flat pattern bends for various shapes and structures ► Key Features: Cone Calculations: Easily generate flat patterns for conical shapes. Frustum Eccentric (Parallel & Angle): Compute flat patterns for both parallel and angled eccentric frustums with precision. Truncated Cylinder: Obtain accurate layouts for truncated cylindrical shapes. Bend Allowance Calculations: Calculate bend allowances and deductions for various angles to ensure perfect bends every time. ► Transition Pieces: Rectangle to Circle: Seamlessly transition between rectangular and circular shapes. Rectangle to Circle Eccentric: Handle off-center transitions with ease. Circle to Rectangle: Convert circular shapes to rectangular patterns effortlessly. Rectangle to Rectangle: Calculate flat patterns for rectangular transitions. Complex Shapes: Pants & Pants Eccentric: Design complex bifurcated ducts and fittings. Breeches: Create layouts for Y-shaped connections. Tees: Generate patterns for T-shaped junctions. Pyramid: Calculate flat patterns for pyramid-shaped objects. Auger: Design helical screw patterns with precision. Sphere: Compute flat layouts for spherical shapes. Flange: Generate accurate flange patterns for pipe fittings. Why Choose Our App? • Efficiency: Reduce manual calculations and save valuable time on your projects. • Accuracy: Minimize errors with precise computations tailored to your specific needs. • User-Friendly Interface: Intuitive design makes complex calculations accessible to everyone. • Versatility: Ideal for HVAC ductwork, industrial piping, metal roofing, and custom fabrication projects. • Instant Results: Get immediate calculations to accelerate your workflow. Who Can Benefit? • Sheet Metal Fabricators • Mechanical Engineers • HVAC Professionals • Metalworkers and Welders • Industrial Designers • Students and Educators in Engineering Fields Take Your Fabrication Projects to the Next Level! Say goodbye to cumbersome manual calculations and hello to streamlined efficiency. Download the Sheet Metal Flat Pattern Calculator now and experience the future of metal fabrication. Download Today and Start Shaping Your Success! Privacy Policy : https://forms.gle/dnBUgnpqw4AREio97 Terms of Use : https://forms.gle/2uy2JqJa2JjkTZpo8

About

Digiduct

This HVAC tool assists professionals with duct sizing calculations based on ASHRAE standards. It supports multiple duct shapes and offers intelligent features to ensure accurate and reliable designs for real-world scenarios.

Highlights
  • Duct sizing for rectangular, round, and flat oval ducts
  • Customizable dimensions with locked values
  • Duct location intelligence for context-aware sizing
  • Calculations based on CFM, pressure drop, or velocity
  • Alerts for exceeding pressure drop or velocity limits
Features
Read full description

The Digiduct app is a powerful tool designed for HVAC professionals, supporting everything from design calculations to real-time field verification. Built utilizing the equations and recommendations from the ASHRAE Fundamentals – Duct Design chapter, it ensures your calculations are accurate and reliable, saving you time and reducing errors. Key Features: • Multiple Shape Sizing Options: Supports sizing for rectangular, round, and flat oval ducts, offering flexibility for various duct designs. • Customizable Dimensions: For rectangular and oval ducts, users can lock in one dimension, and the app calculates the other, ensuring precise results based on CFM, pressure drop due to friction, or velocity. • Duct Location Intelligence: offers the user predefined parameters to use as starting point and reference when selecting duct sizes so users at HVAC experience level can make confident selections. Why Choose Digiduct? Unlike other duct sizing tools, Digiduct goes above and beyond. It doesn’t just provide basic size outputs—it evaluates the location and context of your duct (high-pressure vs. low-pressure, shaft vs. plenum), alerting you if your selection exceeds maximum pressure drop or velocity limits. This added layer of intelligence ensures higher accuracy and gives users confidence that their sizing is optimal for the application. Get the assurance of precision with Digiduct—designed to meet the demands of real-world HVAC scenarios.

Screenshots

Flat Pattern Bend Calculator4 screens
Digiduct4 screens

Verdict

The call

The clearest difference is in-app purchases: Digiduct at none against Flat Pattern Bend Calculator's 6. Digiduct also leads on ads (none vs shown). Flat Pattern Bend Calculator's advantage is ratings volume (151 vs 11) and iOS requirement (15.0 vs 26.2). On price, rating, update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Flat Pattern Bend Calculator sells 6 in-app purchases, starting at $4.99 per 7 days. Digiduct asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Flat Pattern Bend Calculator against 4.6 for Digiduct. That said, the two scores are not equally well evidenced: Flat Pattern Bend Calculator has 151 ratings behind it against 11, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 4, 2026 and October 1, 2026 respectively.

Scorecard5 real differences · 5 level
Flat Pattern Bend Calculator versus Digiduct: the parameters behind the verdict, then further details
ParameterFlat Pattern Bend CalculatorDigiduct
PriceFreeFree
Rating4.6 (151 ratings)4.6 (11 ratings)
Positive reviews46.9% of reviews—
Number of ratings151 — better11
Update frequencyEvery 2 monthsEvery 2 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better26.2
Further details — not scored
Size61 MB4 MB
Age rating4+4+
DeveloperBhavinkumar SatashiyaSyska Hennessy Group

Customer experience

Flat Pattern Bend Calculator

All ratings151 ratings
Positive90.1%
Neutral1.3%
Negative8.6%
Written reviews32 reviews
Positive46.9%
Neutral6.3%
Negative46.9%

Digiduct

All ratings11 ratings
Positive90.9%
Neutral0.0%
Negative9.1%

In-app purchases

6 purchases

Flat Pattern Bend Calculator

Subscriptions5
  • Weekly Subscription$4.997 Days
  • MONTHLY UNLOCK$6.991 Month
  • Offer : Yearly Access$29.991 Year
Show 2 more
  • Yearly Access$39.991 Year
  • YEARLY UNLOCK$39.991 Year
One-time1
  • LIFETIME UNLOCK$69.99
None

Digiduct

No in-app purchases

Questions

Is Flat Pattern Bend Calculator free?
Flat Pattern Bend Calculator is free to download, with in-app purchases available.
Is Digiduct free?
Digiduct is free to download, with no in-app purchases.
Which has better reviews, Flat Pattern Bend Calculator or Digiduct?
Flat Pattern Bend Calculator and Digiduct are both rated 4.6 out of 5 on the App Store, from 151 and 11 ratings respectively.
Do Flat Pattern Bend Calculator or Digiduct have ads?
Flat Pattern Bend Calculator shows ads; Digiduct does not.
Which is updated more often, Flat Pattern Bend Calculator or Digiduct?
Flat Pattern Bend Calculator ships an update every 2 months, and Digiduct every 2 months. Most recently, Flat Pattern Bend Calculator was updated on October 4, 2026 and Digiduct on October 1, 2026.

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