# Electronics Engineer Helper vs Photovoltaic Calculations

The clearest difference is ads: Electronics Engineer Helper at none against Photovoltaic Calculations's shown. Electronics Engineer Helper also leads on ratings volume (442 vs 1). Photovoltaic Calculations's advantage is iOS requirement (15.0 vs 17.0). On price, rating, update cadence 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 Photovoltaic Calculations sells 3 in-app purchases, starting at $0.99 per 3 months. Whichever you choose, the download price is not the number that matters.

Photovoltaic Calculations holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Electronics Engineer Helper has 442 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 1, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Electronics Engineer Helper | Photovoltaic Calculations |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (442 ratings)](https://appshunter.io/ios/app/electronics-engineer-helper/id896429646/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/photovoltaic-calculations/id6447060646/reviews)** |
| Number of ratings | **442** | 1 |
| Positive reviews | 97.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 93 MB | 31 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Rostyslav Dovhaliuk](https://appshunter.io/developer/896429649) | [Egal Net di Ettore Gallina](https://appshunter.io/developer/993232047) |

## 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


### Photovoltaic Calculations

[App page](https://appshunter.io/ios/app/photovoltaic-calculations/id6447060646)

This app helps professionals and enthusiasts design, size, and analyze solar plants. It provides precise calculations for various components, optimizing yield and efficiency. Includes theoretical resources and practical tools for immediate use.

**Highlights:** Photovoltaic panel yield calculation, Sun position and optimal tilt angle, Solar cable ampacity and cross-section, Protective device sizing, Ideal inverter selection, Panel decay estimation, Series and parallel panel connections

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Version (3 months) | $0.99 | per 3 months |
| PRO Version (1 year) | $2.99 | per year |
| PRO Version (Lifetime) | $89.99 | one-time |


## Frequently asked questions

### Is Electronics Engineer Helper free?

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

### Is Photovoltaic Calculations free?

Photovoltaic Calculations is free to download, with in-app purchases available.

### Which has better reviews, Electronics Engineer Helper or Photovoltaic Calculations?

Photovoltaic Calculations is rated higher. Electronics Engineer Helper averages 4.8 out of 5 from 442 ratings, while Photovoltaic Calculations averages 5.0 from 1 ratings.

### Do Electronics Engineer Helper or Photovoltaic Calculations have ads?

Photovoltaic Calculations shows ads; Electronics Engineer Helper does not.

### Which is updated more often, Electronics Engineer Helper or Photovoltaic Calculations?

Electronics Engineer Helper ships an update monthly, and Photovoltaic Calculations monthly. Most recently, Electronics Engineer Helper was updated on November 1, 2026 and Photovoltaic Calculations on October 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.*