Apps by Armchair Engineering
Ohmulator app icon

Utilities

Ohmulator

Armchair Engineering

$0.99 4.67 · 12 storefronts · 149 ratings No in-app purchases
Open on Apple

About this app

Makes Ohm's Law simple! Ohmulator is a simple, yet robust, electric circuit calculator that enables you to quickly find the unknown variables of a circuit. Ohmulator allows you to easily adjust unit types on the fly (eg. milli Amps, Amps, kilo Amps), which means no prior conversion! Enter two known variables (from: I = Current, R = Resistance, V = Voltage, P = Power), set preferred units, then Ohmulator will calculate and return the previously unknown values. Also an effective (total) resistance calculator. What two App Store reviewers had to say about Ohmulator: "Great. Does what it says. Very good app. Stylish design." 5 Stars - Jamie1990jamie "Awesome app. It simply works. A must have for the radioamateur or electronic nerd. Nice to have the watt law as well." 5 Stars - Per67 Also available for macOS on the Mac App Store.

Latest release

What’s New

Version 2.2.1 Dec 7, 2019

- Fixed floating keyboard bug, present on some devices running iOS 13

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
79 ratings
79 Aug 7, 2026 · 79 ratings Aug 7, 2026

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking

Price intelligence

1 captured event
Current $0.99
Historical low USD 0.99
Paid → free
Price history
Current $0.99
$0.99 $0.50 Free Aug 7, 2026 · $0.99 Aug 12, 2026 · $0.99 Aug 7, 2026 Aug 12, 2026
  1. First observed Aug 7, 2026 · 10:43 PM $0.99

Screenshots

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