# Cable Calc+ vs Ohms Law

The clearest difference is ads: Cable Calc+ at none against Ohms Law's shown. Cable Calc+ also leads on update cadence (every 4 months vs every 16 months) and monetization model (free vs ad-supported). Ohms Law's advantage is review sentiment (70% vs 38%) and rating (4.3 vs 4.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Ohms Law holds the better App Store score, 4.3 against 4.0. Both are backed by a comparable volume of ratings — 2 and 7 respectively. Written reviews point the same way: 38% of Cable Calc+'s written reviews are positive against 70% of Ohms Law's.

Cable Calc+ ships an update every 4 months, Ohms Law every 16 months. The most recent releases landed on September 27, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Cable Calc+ | Ohms Law |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/cable-calc-plus/id557595191/reviews) | **[4.3 (7 ratings)](https://appshunter.io/ios/app/ohms-law/id590727537/reviews)** |
| Number of ratings | 2 | **7** |
| Positive reviews | 37.5% of reviews | **70.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 4 months** | Every 16 months |
| Monetization | **Free** | Ad-supported |
| Size | 3 MB | 12 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Megger](https://appshunter.io/developer/557595194) | [Pro Certs Software Ltd](https://appshunter.io/developer/444429696) |

## What reviewers say

### Cable Calc+

[App page](https://appshunter.io/ios/app/cable-calc-plus/id557595191)

This tool assists electrical contractors by calculating cable selection and voltage drop for installations up to 25KW and 100A. It supports various cable types and includes reference methods, educational videos, and a guide to electrical test instruments.

**Highlights:** Cable selection calculator, Voltage drop calculator, Supports various cable types (SWA, Fire proof, Tri rated, Twin and earth), Reference methods, Electrical test instrument guide, Educational videos

**Features:** macOS Compatibility

**In-app purchases:** none


### Ohms Law

[App page](https://appshunter.io/ios/app/ohms-law/id590727537)

This utility app calculates voltage, current, resistance, and power using Ohm's Law. Simply input any two values, and the app will compute the remaining two, providing a comprehensive tool for electrical calculations.

**Highlights:** Calculate Voltage, Calculate Current, Calculate Resistance, Calculate Power, Input two values to find others

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

**In-app purchases:** none


## Frequently asked questions

### Is Cable Calc+ free?

Cable Calc+ is free to download, with no in-app purchases.

### Is Ohms Law free?

Ohms Law is free to download, with no in-app purchases.

### Which has better reviews, Cable Calc+ or Ohms Law?

Ohms Law is rated higher. Cable Calc+ averages 4.0 out of 5 from 2 ratings, while Ohms Law averages 4.3 from 7 ratings.

### Do Cable Calc+ or Ohms Law have ads?

Ohms Law shows ads; Cable Calc+ does not.

### Which is updated more often, Cable Calc+ or Ohms Law?

Cable Calc+ ships an update every 4 months, and Ohms Law every 16 months. Most recently, Cable Calc+ was updated on September 27, 2026 and Ohms Law on September 21, 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.*