Apps by David White
Simple Circuit Builder app icon

Utilities

Simple Circuit Builder

David White

Free download 3.96 · 1 storefront · 28 ratings In-app purchases unconfirmed
Open on Apple

About this app

Description This is the BEST app to learn about Resistors and Circuit Resistance (Equivalent Resistance). This virtual lab provides an excellent environment for anyone who is interested in understanding series and parallel resistors, learning how to measure voltages across resistors, current through series and parallel circuits and solving simple circuits. Features - VERY SIMPLE and EASY TO USE, with up to eight component sections. - Component sections can easily be configured from five different types. - VIRTUAL "Hands On" experience using volt and amp meters. - Resistor values can easily be changed with a picker, keypad or using randomize button. - Circuit voltage can easily be changed from 1 to 1000 volts with a picker or a keypad. - The "Basics" screen make this app unique for the simplicity and speed of seeing the effects of "Opens" (resistor component with infinite resistance) and "Shorts" (resistor component with zero resistance). - FREE and NO ADVERTISEMENTS. - The circuit is always "LIVE" and immediately shows voltage, current and circuit resistance with any changes made to the circuit.

Latest release

What’s New

Version 3.0 Apr 9, 2025

Updated graphics.

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
28 ratings
28 Aug 10, 2026 · 28 ratings Aug 10, 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 Free
Historical low Free
Paid → free
Price history
Current Free
Free Aug 10, 2026 · Free Aug 10, 2026 · Free Aug 10, 2026 Aug 10, 2026
  1. First observed Aug 10, 2026 · 3:23 PM Free

Screenshots

Simple Circuit Builder iPhone screenshotSimple Circuit Builder iPhone screenshotSimple Circuit Builder iPhone screenshotSimple Circuit Builder iPhone screenshotSimple Circuit Builder iPhone screenshot Simple Circuit Builder iPad screenshotSimple Circuit Builder iPad screenshotSimple Circuit Builder iPad screenshotSimple Circuit Builder iPad screenshotSimple Circuit Builder iPad screenshot