# Ohmulator vs Watts Amps Volts Calculator

The clearest difference is rating: Ohmulator at 4.7 against Watts Amps Volts Calculator's 3.0. Ohmulator also leads on ratings volume (79 vs 2) and price ($0.99 vs $1.99). On update cadence, ads, in-app purchases and device support there is nothing between them.

Ohmulator costs $0.99 and Watts Amps Volts Calculator $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Ohmulator holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Ohmulator has 79 ratings behind it against 2, so its average is the more settled of the two.

Ohmulator ships an update every 2 months, Watts Amps Volts Calculator every 3 months. The most recent releases landed on October 22, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Ohmulator | Watts Amps Volts Calculator |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | **[4.7 (79 ratings)](https://appshunter.io/ios/app/ohmulator/id398901336/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/watts-amps-volts-calculator/id6471555910/reviews) |
| Number of ratings | **79** | 2 |
| Positive reviews | 81.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | **Free** | Paid |
| Size | 5 MB | 34 MB |
| Requires iOS | **10.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Armchair Engineering](https://appshunter.io/developer/398901339) | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) |

## What reviewers say

### Ohmulator

[App page](https://appshunter.io/ios/app/ohmulator/id398901336)

This electric circuit calculator simplifies Ohm's Law calculations. It allows users to input two known variables (current, resistance, voltage, or power) and automatically computes the unknown values. The app also supports on-the-fly unit adjustments, eliminating the need for manual conversions.

**Highlights:** Ohm's Law calculations, Calculate unknown variables, Adjustable unit types, Total resistance calculator, Supports Voltage, Current, Resistance, Power

**Features:** Vision Pro support

**In-app purchases:** none


### Watts Amps Volts Calculator

[App page](https://appshunter.io/ios/app/watts-amps-volts-calculator/id6471555910)

This tool simplifies electrical calculations for power, current, and voltage. It's designed for professionals, hobbyists, and students to quickly and accurately manage electrical projects.

**Highlights:** Power (Watts) Calculation, Current (Amps) Calculation, Voltage (Volts) Calculation, Intuitive User Interface, Efficient and Time-Saving, Accurate Results

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

**In-app purchases:** none


## Frequently asked questions

### Is Ohmulator free?

Ohmulator costs $0.99, with no in-app purchases.

### Is Watts Amps Volts Calculator free?

Watts Amps Volts Calculator costs $1.99, with no in-app purchases.

### Which has better reviews, Ohmulator or Watts Amps Volts Calculator?

Ohmulator is rated higher. Ohmulator averages 4.7 out of 5 from 79 ratings, while Watts Amps Volts Calculator averages 3.0 from 2 ratings.

### Do Ohmulator or Watts Amps Volts Calculator have ads?

Neither Ohmulator nor Watts Amps Volts Calculator shows ads.

### Which is updated more often, Ohmulator or Watts Amps Volts Calculator?

Ohmulator ships an update every 2 months, and Watts Amps Volts Calculator every 3 months. Most recently, Ohmulator was updated on October 22, 2026 and Watts Amps Volts Calculator on October 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.*