# Electrical Calculations vs 查农证

The clearest difference is in-app purchases: 查农证 at none against Electrical Calculations's 3. 查农证 also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

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

Electrical Calculations ships an update every 2 weeks, 查农证 fortnightly. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Electrical Calculations | 查农证 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (129 ratings)](https://appshunter.io/ios/app/electrical-calculations/id993232048/reviews)** | — |
| Number of ratings | **129** | — |
| Positive reviews | 86.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 56 MB | 3 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Egal Net di Ettore Gallina](https://appshunter.io/developer/993232047) | [经 唐](https://appshunter.io/developer/1854607153) |

## 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 (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Version (3 months) | $3.99 | per 3 months |
| PRO Version (1 year) | $7.49 | per year |
| PRO Version (Lifetime) | $89.99 | one-time |


### 查农证

[App page](https://appshunter.io/ios/app/id6778256149)

**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 查农证 free?

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

### Do Electrical Calculations or 查农证 have ads?

Electrical Calculations shows ads; 查农证 does not.

### Which is updated more often, Electrical Calculations or 查农证?

Electrical Calculations ships an update every 2 weeks, and 查农证 fortnightly. Most recently, Electrical Calculations was updated on October 24, 2026 and 查农证 on October 14, 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.*