# Flat Pattern Bend Calculator vs Diameter Finder

The clearest difference is review sentiment: Diameter Finder at 100% against Flat Pattern Bend Calculator's 47%. Diameter Finder also leads on in-app purchases (none vs 6) and ads (none vs shown). Flat Pattern Bend Calculator's advantage is ratings volume (151 vs 1) and update cadence (every 2 months vs every 5 months). On price 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. Diameter Finder asks for nothing beyond the download.

Diameter Finder 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 151 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 Diameter Finder's.

Flat Pattern Bend Calculator ships an update every 2 months, Diameter Finder every 5 months. The most recent releases landed on October 15, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Flat Pattern Bend Calculator | Diameter Finder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (151 ratings)](https://appshunter.io/ios/app/flat-pattern-bend-calculator/id1361485922/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/diameter-finder-circle-calc/id6463205574/reviews)** |
| Number of ratings | **151** | 1 |
| Positive reviews | 46.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 61 MB | 13 MB |
| Requires iOS | 15.0 | **12.1** |
| 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 | $29.99 | per year |
| LIFETIME UNLOCK | $49.99 | one-time |


### Diameter Finder

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

This utility app provides a straightforward way to calculate circle properties. Simply input one known value (radius, diameter, circumference, or area) to instantly get the results for the others. It's designed for quick and no-fuss calculations.

**Highlights:** Calculate radius, Calculate diameter, Calculate circumference, Calculate area, Input any single value, Quick results

**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 Diameter Finder free?

Diameter Finder is free to download, with no in-app purchases.

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

Diameter Finder is rated higher. Flat Pattern Bend Calculator averages 4.6 out of 5 from 151 ratings, while Diameter Finder averages 5.0 from 1 ratings.

### Do Flat Pattern Bend Calculator or Diameter Finder have ads?

Flat Pattern Bend Calculator shows ads; Diameter Finder does not.

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

Flat Pattern Bend Calculator ships an update every 2 months, and Diameter Finder every 5 months. Most recently, Flat Pattern Bend Calculator was updated on October 15, 2026 and Diameter Finder on October 6, 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.*