# Electrical Calculations vs HF Drone

The clearest difference is rating: Electrical Calculations at 4.6 against HF Drone's 3.7. Electrical Calculations also leads on review sentiment (87% vs 50%) and ratings volume (129 vs 3). HF Drone's advantage is in-app purchases (none vs 2). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Electrical Calculations sells 2 in-app purchases, starting at $3.99 per 3 months. HF Drone asks for nothing beyond the download.

Electrical Calculations holds the better App Store score, 4.6 against 3.7. That said, the two scores are not equally well evidenced: Electrical Calculations has 129 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 87% of Electrical Calculations's written reviews are positive against 50% of HF Drone's.

Electrical Calculations ships an update every 2 weeks, HF Drone every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Electrical Calculations | HF Drone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (129 ratings)](https://appshunter.io/ios/app/electrical-calculations/id993232048/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/hf-drone/id1601565931/reviews) |
| Number of ratings | **129** | 3 |
| Positive reviews | **86.7% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 56 MB | 222 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Egal Net di Ettore Gallina](https://appshunter.io/developer/993232047) | [Robert Ronash](https://appshunter.io/developer/466846595) |

## What reviewers say

### Electrical Calculations

[App page](https://appshunter.io/ios/app/electrical-calculations/id993232048)

This app provides a comprehensive suite of electrical calculations for professionals. It supports various international standards and offers detailed reports in PDF format. The tool covers wiring, power, motor, and electronic calculations, along with extensive conversion tables and resources.

**Highlights:** Wire size and voltage drop calculations, Power, current, and resistance calculations, Motor performance and connection diagrams, Electronic component calculations, Extensive unit conversions, PDF report generation, Support for IEC, CEI, NEC, CEC standards

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Version (3 months) | $3.99 | per 3 months |
| PRO Version (1 year) | $7.49 | per year |


### HF Drone

[App page](https://appshunter.io/ios/app/hf-drone/id1601565931)

This application enhances the visual experience of drone operation with HD previews and various shooting modes. It offers safety features for beginners and advanced functions for experienced pilots, ensuring a comprehensive and enjoyable flight experience.

**Highlights:** HD Preview and Camera, Panoramic Shooting, Electronic Image Stabilization, GPS Following, Automatic Return, Flight Records, Safety Features for Novices

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

**In-app purchases:** none


## Frequently asked questions

### Is Electrical Calculations free?

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

### Is HF Drone free?

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

### Which has better reviews, Electrical Calculations or HF Drone?

Electrical Calculations is rated higher. Electrical Calculations averages 4.6 out of 5 from 129 ratings, while HF Drone averages 3.7 from 3 ratings.

### Do Electrical Calculations or HF Drone have ads?

Both Electrical Calculations and HF Drone show ads.

### Which is updated more often, Electrical Calculations or HF Drone?

Electrical Calculations ships an update every 2 weeks, and HF Drone every 2 months. Most recently, Electrical Calculations was updated on November 1, 2026 and HF Drone on November 3, 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.*