Comparison

Flat Pattern Bend Calculator vs HDD Report Builder

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

HDD Report Builder

Features
Read full description

Features: • Create and manage HDD drilling reports • Capture entry and exit point images • Google Maps integration for project locations • Generate professional PDF reports We're excited to bring this powerful tool to help you manage your HDD projects efficiently!

Screenshots

Flat Pattern Bend Calculator4 screens
HDD Report Builder4 screens

Verdict

The call

The clearest difference is in-app purchases: HDD Report Builder at none against Flat Pattern Bend Calculator's 6. HDD Report Builder also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price, 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. HDD Report Builder asks for nothing beyond the download.

UpkeepUpdate frequency

Flat Pattern Bend Calculator ships an update every 2 months, HDD Report Builder every 5 weeks. The most recent releases landed on September 24, 2026 and June 2, 2026 respectively.

Scorecard3 real differences · 7 level
Flat Pattern Bend Calculator versus HDD Report Builder: the parameters behind the verdict, then further details
ParameterFlat Pattern Bend CalculatorHDD Report Builder
PriceFreeFree
Rating4.6 (151 ratings) — better—
Positive reviews45.2% of reviews—
Number of ratings151 — better—
Update frequencyEvery 2 monthsEvery 5 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size61 MB80 MB
Age rating4+4+
DeveloperBhavinkumar SatashiyaEinlogica Solutions Private Limited

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

HDD Report Builder

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 HDD Report Builder free?
HDD Report Builder is free to download, with no in-app purchases.
Do Flat Pattern Bend Calculator or HDD Report Builder have ads?
Flat Pattern Bend Calculator shows ads; HDD Report Builder does not.
Which is updated more often, Flat Pattern Bend Calculator or HDD Report Builder?
Flat Pattern Bend Calculator ships an update every 2 months, and HDD Report Builder every 5 weeks. Most recently, Flat Pattern Bend Calculator was updated on September 24, 2026 and HDD Report Builder on June 2, 2026.

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