# Gear Calculator Pro vs SMART DIGITAL TOOLS

The clearest difference is in-app purchases: SMART DIGITAL TOOLS at none against Gear Calculator Pro's 1. Gear Calculator Pro's advantage is device support (4 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Gear Calculator Pro sells 1 one-off in-app purchase. SMART DIGITAL TOOLS asks for nothing beyond the download.

## The numbers

| Metric | Gear Calculator Pro | SMART DIGITAL TOOLS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gear-calculator-pro/id6463792360/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 6 MB | 32 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [志桂 李](https://appshunter.io/developer/1686507153) | [TERMA  ELECTRONICS  CO., LTD](https://appshunter.io/developer/1491312348) |

## What reviewers say

### Gear Calculator Pro

[App page](https://appshunter.io/ios/app/gear-calculator-pro/id6463792360)

This professional mechanical design tool helps engineers and enthusiasts calculate and optimize various gear parameters. It offers accurate calculations for different gear types, custom parameter input, and real-time design previews.

**Highlights:** Accurate calculations for spur, helical, and worm gears, Customizable design parameters, Real-time calculation previews, Efficient gear design formulas and tools, User-friendly interface for all levels

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 永久会员 | $9.99 | one-time |


### SMART DIGITAL TOOLS

[App page](https://appshunter.io/ios/app/smart-digital-tools/id6752516496)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gear Calculator Pro free?

Gear Calculator Pro is free to download, with in-app purchases available.

### Is SMART DIGITAL TOOLS free?

SMART DIGITAL TOOLS is free to download, with no in-app purchases.

### Do Gear Calculator Pro or SMART DIGITAL TOOLS have ads?

Neither Gear Calculator Pro nor SMART DIGITAL TOOLS 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.*