# Electronics Engineer Helper vs IoT OnOff

The clearest difference is review sentiment: Electronics Engineer Helper at 98% against IoT OnOff's 48%. Electronics Engineer Helper also leads on rating (4.8 vs 3.5) and ratings volume (436 vs 14). IoT OnOff's advantage is iOS requirement (11.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Electronics Engineer Helper sells 2 in-app purchases, starting at $4.89 per year and IoT OnOff sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Electronics Engineer Helper holds the better App Store score, 4.8 against 3.5. That said, the two scores are not equally well evidenced: Electronics Engineer Helper has 436 ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 98% of Electronics Engineer Helper's written reviews are positive against 48% of IoT OnOff's.

Electronics Engineer Helper ships an update monthly, IoT OnOff every 3 weeks. The most recent releases landed on October 11, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Electronics Engineer Helper | IoT OnOff |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (436 ratings)](https://appshunter.io/ios/app/electronics-engineer-helper/id896429646/reviews)** | [3.5 (14 ratings)](https://appshunter.io/ios/app/iot-onoff/id1267226555/reviews) |
| Number of ratings | **436** | 14 |
| Positive reviews | **97.7% of reviews** | 48.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 92 MB | 19 MB |
| Requires iOS | 17.0 | **11.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Rostyslav Dovhaliuk](https://appshunter.io/developer/896429649) | [Kris Van Hoye](https://appshunter.io/developer/1267226554) |

## What reviewers say

### Electronics Engineer Helper

[App page](https://appshunter.io/ios/app/electronics-engineer-helper/id896429646)

This app provides a comprehensive suite of calculators and reference tools for electronics enthusiasts and professionals. It includes features for component identification, circuit calculations, and electrical property analysis, aiding in both study and practical work.

**Highlights:** Datasheet search, Resistor color code calculator, Electronic schematic symbols, Pinouts guide, Ohm's law calculator, AWG converter, Unit converter

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Year Subscription | $4.89 | per year |
| Lifetime PRO Version | $12.49 | one-time |

**What reviewers like**

- 🚀 Useful tool
- 👍 Comprehensive reference
- 👍 Intuitive and well-designed
- 👍 Saves time and effort
- 👍 Excellent for beginners and professionals

**What reviewers complain about**

- 💰 Some advanced features require paid subscription
- 🇷🇺 Some content in Russian language

**Reported bugs**

- Incorrect resistor color code display for some values
- In-app purchase option not working for some users

**Requested features**

- Add more circuit schematics and examples
- Include ASCII code to decimal, hex, and octal conversion
- Expand the pinout section with more details
- Add active filter (RC, RL, RLC, LC) calculators
- Include digital to analog converter, transistor, and transformer calculators


### IoT OnOff

[App page](https://appshunter.io/ios/app/iot-onoff/id1267226555)

Monitor and control your Internet of Things projects with this app. It offers interactive widgets for data presentation and in-app configuration. Supports JSON formatted MQTT messages and includes a demo configuration for immediate use.

**Highlights:** Interactive widgets for IoT data, In-app configuration, JSON formatted MQTT message handling, Customizable themes, Multiple dashboards, Auto reconnect to MQTT broker, Topic builder with autocomplete

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium edition | $2.99 | one-time |
| JSON parser | $2.99 | one-time |
| Storage Manager | $2.99 | one-time |

**What reviewers like**

- 👍 Works well with MQTT
- 🚀 Fast and responsive GUI
- 👍 Configurable interface
- 👍 Good for prototyping
- 👍 Works with local brokers

**What reviewers complain about**

- 🐛 Inconsistent responsiveness
- 🐛 UI issues on modern iPhones
- 🐛 Buttons hard to tap
- 🐛 Graph widgets limited
- 🐛 Lacks documentation

**Reported bugs**

- Icons sometimes not working
- App does not respond to screen clicks
- Cannot save groups or add items
- Storage Manager does not see saved configs
- Interface forces users to keep tapping

**Requested features**

- Add shortcuts for voice commands
- Add momentary push button widget
- Add more colorful widgets
- Add datalogger widget
- Add ability to connect to multiple brokers simultaneously


## Frequently asked questions

### Is Electronics Engineer Helper free?

Electronics Engineer Helper is free to download, with in-app purchases available.

### Is IoT OnOff free?

IoT OnOff is free to download, with in-app purchases available.

### Which has better reviews, Electronics Engineer Helper or IoT OnOff?

Electronics Engineer Helper is rated higher. Electronics Engineer Helper averages 4.8 out of 5 from 436 ratings, while IoT OnOff averages 3.5 from 14 ratings.

### Do Electronics Engineer Helper or IoT OnOff have ads?

Neither Electronics Engineer Helper nor IoT OnOff shows ads.

### Which is updated more often, Electronics Engineer Helper or IoT OnOff?

Electronics Engineer Helper ships an update monthly, and IoT OnOff every 3 weeks. Most recently, Electronics Engineer Helper was updated on October 11, 2026 and IoT OnOff on October 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*