# ElectriCalc Pro vs Nellin controllers

The clearest difference is in-app purchases: Nellin controllers at none against ElectriCalc Pro's 2. Nellin controllers also leads on update cadence (daily vs every 10 months). ElectriCalc Pro's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 16.4). On price and ads there is nothing between them.

Both are free to download. ElectriCalc Pro sells 2 in-app purchases, starting at $4.99 per month. Nellin controllers asks for nothing beyond the download.

ElectriCalc Pro ships an update every 10 months, Nellin controllers daily. The most recent releases landed on November 12, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | ElectriCalc Pro | Nellin controllers |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (369 ratings)](https://appshunter.io/ios/app/electricalc-pro/id569677304/reviews)** | — |
| Number of ratings | **369** | — |
| Positive reviews | 78.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 29 MB | 38 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [Calculated Industries](https://appshunter.io/developer/370406449) | [Aleksandr Liashov](https://appshunter.io/developer/1881074623) |

## What reviewers say

### ElectriCalc Pro

[App page](https://appshunter.io/ios/app/electricalc-pro/id569677304)

This app provides electricians and electrical professionals with a powerful tool for performing complex calculations based on the latest National Electrical Code (NEC). It offers solutions for wire sizing, voltage drop, conduit sizing, and motor calculations, saving time and ensuring code compliance.

**Highlights:** NEC compliant calculations, Wire and conduit sizing, Voltage drop calculations, Motor full-load amps, Ohm's Law solver, Built-in help and tutorials

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Full Access | $4.99 | per month |
| 1 Year Full Access | $39.99 | per year |

**What reviewers like**

- 👍 Great app overall
- 👍 Excellent electrical engineering application
- 👍 Great tool for engineering teams
- 👍 Useful in daily work activities
- 👍 Continuously improving with new functions

**What reviewers complain about**

- 👎 Recurring costs are disliked
- 👎 Not worth it if you have the actual calculator
- 👎 App should include current NEC
- 👎 High cost for difficulty of use
- 👎 No longer works after iOS update

**Reported bugs**

- No active subscriptions error after iOS update
- HP calculations not working
- App closes when calculating conduit size
- Wire size calculation crashes the app
- Fails when entering HP

**Requested features**

- Option to print
- Metric wire size (mm2)


### Nellin controllers

[App page](https://appshunter.io/ios/app/nellin-controllers/id6801412782)

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

**In-app purchases:** none


## Frequently asked questions

### Is ElectriCalc Pro free?

ElectriCalc Pro is free to download, with in-app purchases available.

### Is Nellin controllers free?

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

### Do ElectriCalc Pro or Nellin controllers have ads?

Neither ElectriCalc Pro nor Nellin controllers shows ads.

### Which is updated more often, ElectriCalc Pro or Nellin controllers?

ElectriCalc Pro ships an update every 10 months, and Nellin controllers daily. Most recently, ElectriCalc Pro was updated on November 12, 2026 and Nellin controllers on November 6, 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.*