# Arc Calculator Pro vs WB II Panel Simulator

The clearest difference is price: WB II Panel Simulator at Free against Arc Calculator Pro's $3.99. WB II Panel Simulator also leads on update cadence (weekly vs every 41 months) and iOS requirement (8.0 vs 16.1). On ads, in-app purchases and device support there is nothing between them.

WB II Panel Simulator is free to download; Arc Calculator Pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Arc Calculator Pro ships an update every 41 months, WB II Panel Simulator weekly. The most recent releases landed on October 17, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Arc Calculator Pro | WB II Panel Simulator |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Weekly** |
| Monetization | Paid | — |
| Size | 2 MB | 41 MB |
| Requires iOS | 16.1 | **8.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Imran Pinjara](https://appshunter.io/developer/1484488781) | [DAIHEN CORPORATION](https://appshunter.io/developer/1193836117) |

## What reviewers say

### Arc Calculator Pro

[App page](https://appshunter.io/ios/app/arc-calculator-pro/id1491369908)

This utility app provides precise calculations for various arc measurements, including length, angle, radius, and area. It supports both millimeters and inches, making it ideal for fabrication and engineering tasks. The app is designed for high performance and offline use.

**Highlights:** Arc Length Calculation, Arc Angle Calculation, Arc Radius Calculation, Arc Segment Area Calculation, Arc Sector Area Calculation, Supports mm and inches, Offline functionality

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

**In-app purchases:** none


### WB II Panel Simulator

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Arc Calculator Pro free?

Arc Calculator Pro costs $3.99, with no in-app purchases.

### Is WB II Panel Simulator free?

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

### Do Arc Calculator Pro or WB II Panel Simulator have ads?

Neither Arc Calculator Pro nor WB II Panel Simulator shows ads.

### Which is updated more often, Arc Calculator Pro or WB II Panel Simulator?

Arc Calculator Pro ships an update every 41 months, and WB II Panel Simulator weekly. Most recently, Arc Calculator Pro was updated on October 17, 2026 and WB II Panel Simulator on October 18, 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.*