# Flat Pattern Bend Calculator vs Tank Volume Calculator App

The clearest difference is review sentiment: Flat Pattern Bend Calculator at 47% against Tank Volume Calculator App's 0%. Flat Pattern Bend Calculator also leads on rating (4.6 vs 1.0) and ratings volume (151 vs 1). Tank Volume Calculator App's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and monetization model 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 Tank Volume Calculator App sells 2 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 1.0. 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 0% of Tank Volume Calculator App's.

Flat Pattern Bend Calculator ships an update every 2 months, Tank Volume Calculator App every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Flat Pattern Bend Calculator | Tank Volume Calculator App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (151 ratings)](https://appshunter.io/ios/app/flat-pattern-bend-calculator/id1361485922/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/tank-volume-calculator-app/id6475638941/reviews) |
| Number of ratings | **151** | 1 |
| Positive reviews | **46.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 61 MB | 36 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) | [Valaji Global](https://appshunter.io/developer/1694947440) |

## 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 |


### Tank Volume Calculator App

[App page](https://appshunter.io/ios/app/tank-volume-calculator-app/id6475638941)

This app precisely calculates the volume of numerous tank shapes, including cylindrical, rectangular, and conical. It supports custom densities and offers output in various units like liters, cubic meters, and gallons. Designed for professionals and enthusiasts, it simplifies complex calculations with a user-friendly interface.

**Highlights:** Diverse tank types (vertical, horizontal, elliptical, etc.), Customizable density input, Multiple output units (liters, m³, gallons, kg), Flexible input unit options (mm, m, ft, in), User-friendly interface, Precision calculation algorithms

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads - Monthly | $1.99 | per month |
| Remove Ads - Yearly | $19.99 | per year |


## Frequently asked questions

### Is Flat Pattern Bend Calculator free?

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

### Is Tank Volume Calculator App free?

Tank Volume Calculator App is free to download, with in-app purchases available.

### Which has better reviews, Flat Pattern Bend Calculator or Tank Volume Calculator App?

Flat Pattern Bend Calculator is rated higher. Flat Pattern Bend Calculator averages 4.6 out of 5 from 151 ratings, while Tank Volume Calculator App averages 1.0 from 1 ratings.

### Do Flat Pattern Bend Calculator or Tank Volume Calculator App have ads?

Both Flat Pattern Bend Calculator and Tank Volume Calculator App show ads.

### Which is updated more often, Flat Pattern Bend Calculator or Tank Volume Calculator App?

Flat Pattern Bend Calculator ships an update every 2 months, and Tank Volume Calculator App every 3 weeks. Most recently, Flat Pattern Bend Calculator was updated on October 24, 2026 and Tank Volume Calculator App on October 24, 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.*