# Ohms

> Electrical calculator for voltage, amperes, resistance, and wattage. (iPhone/iPad app by Matthew Curtner.)

- Source: https://appshunter.io/ios/app/ohms/id919602622 (this page in markdown: same URL + `.md`)
- Developer: [Matthew Curtner](https://appshunter.io/developer/434212564)
- Category: Utilities, Education
- Price: Free
- Rating: 4.00/5 from 2 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 26 MB
- Languages: English
- Released: 2014-09-25
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/ohms/id919602622/reviews.md

## What is Ohms?

A simple, easy-to-use, electrical calculator to help find the needed values corresponding to voltage, amperes, resistance, and wattage.   Just enter two of the known values and it will calculate the missing values.

## Key features

- Calculate voltage, amperes, resistance, wattage
- Input any two known values
- Automatic calculation of missing values
- Simple and easy-to-use interface

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/ohms/id919602622/reviews.md

### 5/5 — Great!

*2017-01-03, version 4.1*

Works well, works fast. Performs just the calculations and that's it. That's all I need.

### 5/5 — Ohms My Favorite

*2015-11-24, version 3.0*

This is the fastest and the easiest. My favorite!

### 1/5 — iAd's make this useless

*2015-10-18, version 3.0*

the iAd banners make this app useless.  going to find one that i can buy without iAd's that use up my cellular data

### 5/5 — Perfect

*2015-03-08, version 3.0*

Invaluable little app for vaping newbs (like me). Simple perfect!

## Frequently asked questions about Ohms

### What electrical values can Ohms calculate?

Ohms can calculate voltage, amperes, resistance, and wattage. You just need to provide any two of these values, and it will compute the missing ones.

### How does Ohms work?

Ohms uses a simple input system. You enter two known electrical values (voltage, amperes, resistance, or wattage), and the app automatically calculates and displays the remaining values based on Ohm's Law.

### Is Ohms free to use?

Yes, Ohms is available for free. There are no costs associated with downloading or using its core calculation features.

### What devices is Ohms compatible with?

Ohms is designed for Apple devices, including iPhone, iPad, and iPod. It is not currently available for Android or other operating systems.

### How often is Ohms updated?

The latest version of Ohms, 5.0, was released on September 14, 2018. While it has not been updated recently, its core functionality remains stable for its intended purpose.

### What is the age rating for Ohms?

Ohms has an age rating of 4+, making it suitable for users of all ages. Its straightforward interface and simple calculations are easy to understand.

### What do users like about Ohms?

Based on its 4.0-star rating from 2 reviews, users likely appreciate its simplicity and ease of use for quick electrical calculations. The ability to input any two values is a key convenience.

### Does Ohms have ads?

The provided data does not specify if Ohms contains advertisements. As it is a free utility app, it may potentially include ads, but this is not confirmed.

## Version history (last 1 release)

### 5.0 — 2018-09-14

Updated for iOS 12

## Apps similar to Ohms

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Ohms Law Calc.](https://appshunter.io/ios/app/ohms-law-calc/id491898006) | 4.7 (1,300) | Free | Utilities |
| [Electrical Calculator lite](https://appshunter.io/ios/app/electrical-calculator-lite/id922903696) | 4.6 (565) | Free | Utilities |
| [Converter and Calculator Lite](https://appshunter.io/ios/app/converter-and-calculator-lite/id688576152) | 4.8 (83) | Free | Utilities |
| [Resistance Calculator: In Ohms](https://appshunter.io/ios/app/resistance-calculator-in-ohms/id1462608828) | 4.6 (10) | Free | Utilities |
| [Ohm's Law App](https://appshunter.io/ios/app/ohms-law-app/id1622295855) | — | Free | Utilities |
| [Turns Counter (Magnetic)](https://appshunter.io/ios/app/turns-counter-magnetic/id1463609810) | 4.8 (24) | Free | Utilities |

## More apps by Matthew Curtner

- [Resistor Colors Calc](https://appshunter.io/ios/app/resistor-colors-calc/id947894933)
- [Split Degrees](https://appshunter.io/ios/app/split-degrees/id975104016)

All apps by Matthew Curtner: https://appshunter.io/developer/434212564

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*