# WB II Panel Simulator vs Screw Flight Calculator

The clearest difference is price: WB II Panel Simulator at Free against Screw Flight Calculator's $1.99. WB II Panel Simulator also leads on update cadence (weekly vs every 17 months) and iOS requirement (8.0 vs 13.0). On ads, in-app purchases and device support there is nothing between them.

WB II Panel Simulator is free to download; Screw Flight Calculator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

WB II Panel Simulator ships an update weekly, Screw Flight Calculator every 17 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | WB II Panel Simulator | Screw Flight Calculator |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/screw-flight-calculator/id1664794765/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 17 months |
| Monetization | — | Paid |
| Size | 41 MB | 44 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DAIHEN CORPORATION](https://appshunter.io/developer/1193836117) | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) |

## What reviewers say

### WB II Panel Simulator

[App page](https://appshunter.io/ios/app/wb-ii-panel-simulator/id1588671634)

**Features:** macOS Compatibility

**In-app purchases:** none


### Screw Flight Calculator

[App page](https://appshunter.io/ios/app/screw-flight-calculator/id1664794765)

Calculate the flat pattern size for cutting blank plates for screw flight development and fabrication. This tool is essential for creating screw conveyors, ribbon blenders, and other process equipment.

**Highlights:** Calculate flat pattern size, Input outside & inside diameter, Input pitch and material thickness, Calculate weight of material, Includes radial cut element

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

**In-app purchases:** none


## Frequently asked questions

### Is WB II Panel Simulator free?

WB II Panel Simulator is free to download, with no in-app purchases.

### Is Screw Flight Calculator free?

Screw Flight Calculator costs $1.99, with no in-app purchases.

### Do WB II Panel Simulator or Screw Flight Calculator have ads?

Neither WB II Panel Simulator nor Screw Flight Calculator shows ads.

### Which is updated more often, WB II Panel Simulator or Screw Flight Calculator?

WB II Panel Simulator ships an update weekly, and Screw Flight Calculator every 17 months. Most recently, WB II Panel Simulator was updated on November 3, 2026 and Screw Flight Calculator on November 3, 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.*