# EE ToolKit PRO vs Kösching

The clearest difference is price: Kösching at Free against EE ToolKit PRO's $9.99. EE ToolKit PRO's advantage is update cadence (every 3 months vs every 22 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Kösching is free to download; EE ToolKit PRO costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EE ToolKit PRO ships an update every 3 months, Kösching every 22 months. The most recent releases landed on September 21, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | EE ToolKit PRO | Kösching |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.9 (293 ratings)](https://appshunter.io/ios/app/ee-toolkit-pro/id368780426/reviews)** | — |
| Number of ratings | **293** | — |
| Positive reviews | 89.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 22 months |
| Monetization | Paid | — |
| Size | 289 MB | 28 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [Markt Koesching](https://appshunter.io/developer/1522037179) |

## What reviewers say

### EE ToolKit PRO

[App page](https://appshunter.io/ios/app/ee-toolkit-pro/id368780426)

This comprehensive toolkit offers over 160 electronic applications, calculators, and reference sections for electronics engineers, students, and hobbyists. It includes features like a multi-functional keyboard, color code tools, audio scope, and circuit simulations, with ongoing improvements and updates.

**Highlights:** Over 160 electronic applications, Multi-functional keyboard, Color code and SMD code tools, Audio scope and frequency generator, Component reference section with datasheets, 555 Timer tools, PCB trace impedance calculators, Real-time circuit simulations

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Top-notch tool
- 👍 Extremely helpful
- 🔥 Invaluable for electronics work
- 💯 Excellent app
- 🔍 Comprehensive reference

**What reviewers complain about**

- 🐛 Occasional crashes or bugs
- 🔍 UI could be more intuitive
- 📱 Some features not optimized for mobile
- 🔢 Limited functionality for advanced users

**Reported bugs**

- 7400 routine causes app to close
- Resistor value calculation issues
- Compatibility problems with newer iOS versions

**Requested features**

- Add support for vacuum tubes
- Implement logarithmic frequency sweep
- Include more component pinout information
- Integrate a circuit builder/simulator
- Add DB to RMS and peak-to-peak conversion


### Kösching

[App page](https://appshunter.io/ios/app/kosching/id1522037177)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EE ToolKit PRO free?

EE ToolKit PRO costs $9.99, with no in-app purchases.

### Is Kösching free?

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

### Do EE ToolKit PRO or Kösching have ads?

Neither EE ToolKit PRO nor Kösching shows ads.

### Which is updated more often, EE ToolKit PRO or Kösching?

EE ToolKit PRO ships an update every 3 months, and Kösching every 22 months. Most recently, EE ToolKit PRO was updated on September 21, 2026 and Kösching on September 9, 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.*