# EE ToolKit vs OpAmplifiers

The clearest difference is in-app purchases: OpAmplifiers at none against EE ToolKit's 1. OpAmplifiers also leads on rating (5.0 vs 4.7) and iOS requirement (6.0 vs 12.0). EE ToolKit's advantage is ratings volume (1.4K vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. EE ToolKit sells 1 one-off in-app purchase. OpAmplifiers asks for nothing beyond the download.

OpAmplifiers holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: EE ToolKit has 1.4K ratings behind it against 1, so its average is the more settled of the two.

EE ToolKit ships an update every 3 months, OpAmplifiers every 6 weeks. The most recent releases landed on October 1, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | EE ToolKit | OpAmplifiers |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (1.4K ratings)](https://appshunter.io/ios/app/ee-toolkit/id391792609/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/opamplifiers/id700960348/reviews)** |
| Number of ratings | **1.4K** | 1 |
| Positive reviews | 90.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 289 MB | 3 MB |
| Requires iOS | 12.0 | **6.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [Kyrill Cousson](https://appshunter.io/developer/478650872) |

## What reviewers say

### EE ToolKit

[App page](https://appshunter.io/ios/app/ee-toolkit/id391792609)

This comprehensive toolkit offers over 160 electronic applications, calculators, and reference tools for engineers, students, and hobbyists. It features a multi-functional keyboard, color code tools, audio scope, frequency generator, and component references with datasheet access. The app supports real-time circuit simulations and includes a file manager for saving calculations.

**Highlights:** Over 160 electronic applications, Multi-functional keyboard, Color code and SMD code tools, Audio scope and frequency pitch detector, Frequency generator, Component reference section with datasheet access, Real-time circuit simulations

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Complete EE ToolKit Pro Upgrade | $9.99 | one-time |

**What reviewers like**

- 👍 Useful tools and features
- 🚀 Comprehensive and informative
- 👍 Intuitive and easy to use
- 👍 Helpful for both beginners and professionals
- 👍 Regularly updated with improvements

**What reviewers complain about**

- 🔒 Many features locked behind paywall
- 🐛 Some bugs and glitches reported
- 🔍 Limited free version functionality
- 📱 Accessibility issues for visually impaired users

**Reported bugs**

- Locked features not unlocking properly
- Certain tools and calculators not functioning as expected

**Requested features**

- Add circuit simulation capabilities
- Include more microcontroller and automotive-related content
- Improve zooming and readability on certain screens
- Implement Kirchhoff's laws and node analysis tools


### OpAmplifiers

[App page](https://appshunter.io/ios/app/opamplifiers/id700960348)

This app aids electronics students by providing information on operational amplifier applications, including schematics, formulas, and component calculations. It offers a simple interface to revise key concepts and check amplifier pinouts.

**Highlights:** Operational amplifier application revision, Schematics and input value display, Formula lookup, Component value calculation, Amplifier pinout checking, Supports multiple op-amp circuit types

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EE ToolKit free?

EE ToolKit is free to download, with in-app purchases available.

### Is OpAmplifiers free?

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

### Which has better reviews, EE ToolKit or OpAmplifiers?

OpAmplifiers is rated higher. EE ToolKit averages 4.7 out of 5 from 1.4K ratings, while OpAmplifiers averages 5.0 from 1 ratings.

### Do EE ToolKit or OpAmplifiers have ads?

Neither EE ToolKit nor OpAmplifiers shows ads.

### Which is updated more often, EE ToolKit or OpAmplifiers?

EE ToolKit ships an update every 3 months, and OpAmplifiers every 6 weeks. Most recently, EE ToolKit was updated on October 1, 2026 and OpAmplifiers on September 23, 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.*