# Flat Pattern Bend Calculator vs Circle & Diameter Calculator

The clearest difference is review sentiment: Circle & Diameter Calculator at 100% against Flat Pattern Bend Calculator's 47%. Circle & Diameter Calculator also leads on in-app purchases (none vs 6) and ads (none vs shown). Flat Pattern Bend Calculator's advantage is update cadence (every 6 weeks vs every 20 months) and ratings volume (152 vs 1). On price, device support and iOS requirement 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. Circle & Diameter Calculator asks for nothing beyond the download.

Circle & Diameter Calculator holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Flat Pattern Bend Calculator has 152 ratings behind it against 1, 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 100% of Circle & Diameter Calculator's.

Flat Pattern Bend Calculator ships an update every 6 weeks, Circle & Diameter Calculator every 20 months. The most recent releases landed on November 13, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Flat Pattern Bend Calculator | Circle & Diameter Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (152 ratings)](https://appshunter.io/ios/app/flat-pattern-bend-calculator/id1361485922/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/circle-and-diameter-calculator/id6463205574/reviews)** |
| Number of ratings | **152** | 1 |
| Positive reviews | 46.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 20 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 91 MB | 10 MB |
| Requires iOS | 15.0 | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) | [Krzysztof Gwiazda](https://appshunter.io/developer/1546740383) |

## 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 | $39.99 | per year |
| LIFETIME UNLOCK | $49.99 | one-time |


### Circle & Diameter Calculator

[App page](https://appshunter.io/ios/app/circle-and-diameter-calculator/id6463205574)

Instantly calculate a circle's diameter, radius, circumference, and area. This tool is perfect for students, DIYers, and anyone needing quick, accurate circular measurements. It features an intuitive interface with automatic result updates.

**Highlights:** Calculate radius, diameter, circumference, and area, Instant calculations with automatic result updates, Input any known value to find others, Accurate geometry formulas using Pi, Support for decimal numbers and international input, Simple and intuitive interface

**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 Circle & Diameter Calculator free?

Circle & Diameter Calculator is free to download, with no in-app purchases.

### Which has better reviews, Flat Pattern Bend Calculator or Circle & Diameter Calculator?

Circle & Diameter Calculator is rated higher. Flat Pattern Bend Calculator averages 4.6 out of 5 from 152 ratings, while Circle & Diameter Calculator averages 5.0 from 1 ratings.

### Do Flat Pattern Bend Calculator or Circle & Diameter Calculator have ads?

Flat Pattern Bend Calculator shows ads; Circle & Diameter Calculator does not.

### Which is updated more often, Flat Pattern Bend Calculator or Circle & Diameter Calculator?

Flat Pattern Bend Calculator ships an update every 6 weeks, and Circle & Diameter Calculator every 20 months. Most recently, Flat Pattern Bend Calculator was updated on November 13, 2026 and Circle & Diameter Calculator on November 12, 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.*