# Surface Area Calculator + Cost vs Flat Pattern & Bend Calculator

The clearest difference is rating: Flat Pattern & Bend Calculator at 4.3 against Surface Area Calculator + Cost's 3.5. Surface Area Calculator + Cost's advantage is ratings volume (24 vs 4). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Surface Area Calculator + Cost sells 3 in-app purchases, starting at $1.99 per month and Flat Pattern & Bend Calculator sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Flat Pattern & Bend Calculator holds the better App Store score, 4.3 against 3.5. That said, the two scores are not equally well evidenced: Surface Area Calculator + Cost has 24 ratings behind it against 4, so its average is the more settled of the two.

Surface Area Calculator + Cost ships an update every 6 months, Flat Pattern & Bend Calculator every 4 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Surface Area Calculator + Cost | Flat Pattern & Bend Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (24 ratings)](https://appshunter.io/ios/app/surface-area-calculator-plus-cost/id1502218219/reviews) | **[4.3 (4 ratings)](https://appshunter.io/ios/app/flat-pattern-and-bend-calculator/id6747935750/reviews)** |
| Number of ratings | **24** | 4 |
| Positive reviews | 22.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 4 MB | 16 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Phan Nhat Đang](https://appshunter.io/developer/1437390098) | [AdityaKumar Patel](https://appshunter.io/developer/1769783453) |

## What reviewers say

### 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 |


### Flat Pattern & Bend Calculator

[App page](https://appshunter.io/ios/app/flat-pattern-and-bend-calculator/id6747935750)

Calculate precise flat pattern dimensions for various fabricated metal components, from simple bends to complex shapes like elbows, lobsterbacks, and cones. This tool assists fabricators, welders, and engineers in generating accurate layouts for piping, ducting, and pressure vessels.

**Highlights:** Flat pattern calculations for bends, elbows, tees, cones, Supports complex shapes: truncated cones, pyramids, screw flights, Transition layouts: round-to-square, square-to-round, Fast, reliable, and accurate results, Unique and copyright-safe solutions

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Access | $4.99 | per month |
| Premium Yearly Access | $29.99 | per year |


## Frequently asked questions

### Is Surface Area Calculator + Cost free?

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

### Is Flat Pattern & Bend Calculator free?

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

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

Flat Pattern & Bend Calculator is rated higher. Surface Area Calculator + Cost averages 3.5 out of 5 from 24 ratings, while Flat Pattern & Bend Calculator averages 4.3 from 4 ratings.

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

Neither Surface Area Calculator + Cost nor Flat Pattern & Bend Calculator shows ads.

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

Surface Area Calculator + Cost ships an update every 6 months, and Flat Pattern & Bend Calculator every 4 months. Most recently, Surface Area Calculator + Cost was updated on November 3, 2026 and Flat Pattern & Bend Calculator on October 30, 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.*