# B vs Gear Simulation & Calculation

The clearest difference is price: B at Free against Gear Simulation & Calculation's $3.99. B also leads on iOS requirement (8.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

B is free to download; Gear Simulation & Calculation costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | B | Gear Simulation & Calculation |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | — | **[4.3 (12 ratings)](https://appshunter.io/ios/app/gear-simulation-and-calculation/id1618701429/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 46 months |
| Monetization | — | Paid |
| Size | 1 MB | 1 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [增宝 王](https://appshunter.io/developer/827650044) | [Heng Jia Liang](https://appshunter.io/developer/1532000635) |

## What reviewers say

### B

[App page](https://appshunter.io/ios/app/b-tree-binary-tree/id1064830420)

**Features:** macOS Compatibility

**In-app purchases:** none


### Gear Simulation & Calculation

[App page](https://appshunter.io/ios/app/gear-simulation-and-calculation/id1618701429)

This tool calculates gear ratios, torque, and speed for gear train systems. It allows users to simulate how these systems work on the fly, aiding in the design of custom gear systems before physical creation. Ideal for DIY enthusiasts and engineers.

**Highlights:** Calculate gear ratio, Calculate torque and speed, Simulate gear train operation, Input/output gear teeth number, Calculate mechanical advantage, Calculate wheel speed and diameter

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

**In-app purchases:** none


## Frequently asked questions

### Is B free?

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

### Is Gear Simulation & Calculation free?

Gear Simulation & Calculation costs $3.99, with no in-app purchases.

### Do B or Gear Simulation & Calculation have ads?

Neither B nor Gear Simulation & Calculation shows ads.

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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.*