# Flat Pattern Bend Calculator vs Digiduct

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.

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

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.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 15, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Flat Pattern Bend Calculator | Digiduct |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (151 ratings)](https://appshunter.io/ios/app/flat-pattern-bend-calculator/id1361485922/reviews) | [4.6 (11 ratings)](https://appshunter.io/ios/app/digiduct/id6738926359/reviews) |
| Number of ratings | **151** | 11 |
| Positive reviews | 46.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 61 MB | 4 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) | [Syska Hennessy Group](https://appshunter.io/developer/1782943081) |

## What reviewers say

### Flat Pattern Bend Calculator

[App page](https://appshunter.io/ios/app/flat-pattern-bend-calculator/id1361485922)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MONTHLY UNLOCK | $4.99 | per month |
| Weekly Subscription | $4.99 | per 7 days |
| Offer : Yearly Access | $19.99 | per year |
| YEARLY UNLOCK | $29.99 | per year |
| Yearly Access | $29.99 | per year |
| LIFETIME UNLOCK | $49.99 | one-time |


### Digiduct

[App page](https://appshunter.io/ios/app/digiduct/id6738926359)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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 15, 2026 and Digiduct on October 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*