# iGearbox vs Electronics Tools & Calc Pro

The clearest difference is rating: Electronics Tools & Calc Pro at 5.0 against iGearbox's 3.0. Electronics Tools & Calc Pro also leads on review sentiment (50% vs 17%) and update cadence (every 5 months vs every 55 months). iGearbox's advantage is iOS requirement (12.0 vs 15.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

iGearbox costs $4.99 and Electronics Tools & Calc Pro $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Electronics Tools & Calc Pro holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 6 and 5 respectively. Written reviews point the same way: 17% of iGearbox's written reviews are positive against 50% of Electronics Tools & Calc Pro's.

iGearbox ships an update every 55 months, Electronics Tools & Calc Pro every 5 months. The most recent releases landed on October 14, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | iGearbox | Electronics Tools & Calc Pro |
| --- | --- | --- |
| Price | $4.99 | $4.99 |
| Rating | [3.0 (6 ratings)](https://appshunter.io/ios/app/igearbox/id451320370/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/electronics-tools-and-calc-pro/id1581668963/reviews)** |
| Number of ratings | **6** | 5 |
| Positive reviews | 16.7% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 55 months | **Every 5 months** |
| Monetization | Paid | Paid |
| Size | 12 MB | 58 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Motionics LLC](https://appshunter.io/developer/424498959) | [Anas Abubakar](https://appshunter.io/developer/1581534101) |

## What reviewers say

### iGearbox

[App page](https://appshunter.io/ios/app/igearbox/id451320370)

This app provides interactive tools to calculate gearbox ratios for regular and planetary gearboxes. It features a drag-and-drop design environment for gear trains and a dynamic graphic simulation for planetary gear sets, aiding in understanding and calculation.

**Highlights:** Interactive gear train design, Planetary gear set simulation, Ratio and speed calculations, Multiple gear train configurations, Dynamic component motion animations, Symbolic ratio equations, Dropbox data upload

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

**In-app purchases:** none


### Electronics Tools & Calc Pro

[App page](https://appshunter.io/ios/app/electronics-tools-and-calc-pro/id1581668963)

This app serves as a pocket electronics lab, offering a comprehensive reference for components and circuits. It simplifies complex calculations for filters, inductors, and various circuit configurations, aiding engineers and hobbyists in their designs.

**Highlights:** Electronic component reference, Electronic circuit reference, Filter calculation tools, Inductor winding calculators, Resistor and capacitor calculations, Ohm's Law calculator, AC/DC power calculations

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

**In-app purchases:** none


## Frequently asked questions

### Is iGearbox free?

iGearbox costs $4.99, with no in-app purchases.

### Is Electronics Tools & Calc Pro free?

Electronics Tools & Calc Pro costs $4.99, with no in-app purchases.

### Which has better reviews, iGearbox or Electronics Tools & Calc Pro?

Electronics Tools & Calc Pro is rated higher. iGearbox averages 3.0 out of 5 from 6 ratings, while Electronics Tools & Calc Pro averages 5.0 from 5 ratings.

### Do iGearbox or Electronics Tools & Calc Pro have ads?

Neither iGearbox nor Electronics Tools & Calc Pro shows ads.

### Which is updated more often, iGearbox or Electronics Tools & Calc Pro?

iGearbox ships an update every 55 months, and Electronics Tools & Calc Pro every 5 months. Most recently, iGearbox was updated on October 14, 2026 and Electronics Tools & Calc Pro on October 13, 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.*