# Flat Pattern Bend Calculator vs Surface Area Calculator + Cost

The clearest difference is rating: Flat Pattern Bend Calculator at 4.6 against Surface Area Calculator + Cost's 3.5. Flat Pattern Bend Calculator also leads on review sentiment (47% vs 22%) and update cadence (every 2 months vs every 6 months). Surface Area Calculator + Cost's advantage is ads (none vs shown). On price, in-app purchases, monetization model 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 and Surface Area Calculator + Cost sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Flat Pattern Bend Calculator holds the better App Store score, 4.6 against 3.5. That said, the two scores are not equally well evidenced: Flat Pattern Bend Calculator has 151 ratings behind it against 24, so its average is the more settled of the two. Written reviews point the same way: 47% of Flat Pattern Bend Calculator's written reviews are positive against 22% of Surface Area Calculator + Cost's.

Flat Pattern Bend Calculator ships an update every 2 months, Surface Area Calculator + Cost every 6 months. The most recent releases landed on October 15, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Flat Pattern Bend Calculator | Surface Area Calculator + Cost |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (151 ratings)](https://appshunter.io/ios/app/flat-pattern-bend-calculator/id1361485922/reviews)** | [3.5 (24 ratings)](https://appshunter.io/ios/app/surface-area-calculator-plus-cost/id1502218219/reviews) |
| Number of ratings | **151** | 24 |
| Positive reviews | **46.9% of reviews** | 22.2% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 61 MB | 4 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) | [Phan Nhat Đang](https://appshunter.io/developer/1437390098) |

## 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 |


### Surface Area Calculator + Cost

[App page](https://appshunter.io/ios/app/surface-area-calculator-plus-cost/id1502218219)

Calculate the surface area of various 3D geometric shapes and get an estimated cost for materials. Supports multiple units for calculations and results.

**Highlights:** Surface area calculation for 11 shapes, Material cost estimation, Multiple unit support, Results in various units, Subscription for unlimited access

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly package | $1.99 | per month |
| Annual Premium Package | $14.99 | per year |
| Remove ads | $19.99 | one-time |


## Frequently asked questions

### Is Flat Pattern Bend Calculator free?

Flat Pattern Bend Calculator is free to download, with in-app purchases available.

### Is Surface Area Calculator + Cost free?

Surface Area Calculator + Cost is free to download, with in-app purchases available.

### Which has better reviews, Flat Pattern Bend Calculator or Surface Area Calculator + Cost?

Flat Pattern Bend Calculator is rated higher. Flat Pattern Bend Calculator averages 4.6 out of 5 from 151 ratings, while Surface Area Calculator + Cost averages 3.5 from 24 ratings.

### Do Flat Pattern Bend Calculator or Surface Area Calculator + Cost have ads?

Flat Pattern Bend Calculator shows ads; Surface Area Calculator + Cost does not.

### Which is updated more often, Flat Pattern Bend Calculator or Surface Area Calculator + Cost?

Flat Pattern Bend Calculator ships an update every 2 months, and Surface Area Calculator + Cost every 6 months. Most recently, Flat Pattern Bend Calculator was updated on October 15, 2026 and Surface Area Calculator + Cost on October 1, 2026.

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