# Simple Circuit Builder — Electrical Learning Tool

> Virtual lab for learning series and parallel resistor circuits and electrical measurements. (iPhone/iPad app by David White.)

- Source: https://appshunter.io/ios/app/simple-circuit-builder/id1294616098 (this page in markdown: same URL + `.md`)
- Developer: [David White](https://appshunter.io/developer/911163945)
- Category: Utilities, Education
- Price: Free
- Rating: 4.00/5 from 28 App Store ratings · 19 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 14 MB
- Languages: American English
- Released: 2017-10-12
- Data updated: 2026-06-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/simple-circuit-builder/id1294616098/reviews.md

## What is Simple Circuit Builder?

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.

## Key features

- Build circuits with up to eight components
- Five component types
- Virtual volt and amp meters
- Adjustable resistor and voltage values
- Real-time circuit analysis
- Demonstrates 'Opens' and 'Shorts'

## Recent user reviews (10 of 19)

All indexed reviews: https://appshunter.io/ios/app/simple-circuit-builder/id1294616098/reviews.md

### 1/5 — Useless

*2024-10-23, version 2.2*

Garbage!

### 5/5 — 🙏🏼

*2024-07-05*

My thirst for learning about electricity made me look for applications to understand it even though it seems complicated and difficult. I found this one by chance and was trying to understand how it works and it's amazing to know that this app has an option to plant the seed and expand the kingdom of the King of Kings, Prince of Peace. Amen my brother and thank you ♥️

### 3/5 — Please add

*2024-03-14, version 2.2*

Please add unbalanced circuits/branching. Otherwise it's just an Ohm's law calculator. See PHET for amazing implementation.

Also I HAD to download it to see the prayer. I thought the other reviewer was being a baby, so I had to see. I'm not offended, but I don't get it. Like... was this done at church camp? Did the church let you use the computer? Was your electronics teacher a Christian? Was faith the only thing that kept you going to finish the app because no one else did? Clarify plz, testify if you will.

### 1/5 — Refund please.

*2023-12-28*

Very disappointed. I wish I had held off from purchasing. Why?  Immediately requested a refund.  Usually I am mindful of reviews, but there were none or actually meaningful.

### 5/5 — AWESOME APP

*2020-12-15, version 1.9*

Hey ive never written a review ever, but your app is awesome and I love it so mucH. I love tHat you added a christian secrion wHere one can become connected to God. All glory to tHe almighty king of tHe heavens. If you put God before everything tHat you do, if you incorporate him in your everyday life, no matter wHat it is tHat you will do, you will succeed. Not many will understand our works devotion goes out to him, but I do, and I see your work. All glory to God. Thank you for creating sucH a helpful app! its really Helping me get through finals!

### 1/5 — app not suitable for minors

*2020-11-16, version 1.9*

To your cheap and hypocritical answer I know that you do with the app whatever you want, but please do not invite minors as it indicates that the app can be used from four years onwards.

### 5/5 — Nice app

*2020-02-09, version 1.9*

It’s a nice app for tinkering & learning electrical circuits. I’m happy with it.
 It’s kinda funny, seen several reviews chastising the creator of this app for having a preyer or statement of the Christian faith in the app, when they can clearly choose not see it. It’s most likely the same type people who preach themselves about tolerance and understanding of different cultures & religions. As a proud deist & true believer in equality for all, this doesn’t bother me at all. Y’all should stop the hate & learn actual tolerance for others beliefs. It’s that simple. No attempt at conversion here, just a scripture. Some need to learn the definitions of words they use before spouting off in anger & disagreement.
 If true equality bothers you, delete the app & move on or create your own with whatever you want in it. Let the creator do what he wishes with the apps they create. Simple as that.

### 5/5 — I think it’s super rad

*2020-01-14, version 1.9*

Hey that’s super rad that you have a rededication prayer on this app! Didn’t expect it! That’s truly inspiring, and I thank you for that! 

Jared B

### 5/5 — Thanks a lot!!!

*2019-11-28, version 1.9*

Excelent app, for validate ohms law calculations, God bless!!!

### 4/5 — Huh?

*2019-08-17, version 1.9*

Why is there a Christian prayer in an app for  simple electric circuits? Hey, I appreciate that you asked if I would be offended to click cancel, but seriously. I appreciate your religion, really I do, but maybe write another app for that

## Frequently asked questions about Simple Circuit Builder

### What is Simple Circuit Builder used for?

Simple Circuit Builder is a virtual lab designed to help users learn about resistors, equivalent resistance, and how to measure voltage and current in series and parallel circuits. It provides a hands-on environment for understanding basic electrical concepts.

### How many components can I add to a circuit in Simple Circuit Builder?

You can build circuits with up to eight component sections within Simple Circuit Builder. These sections can be configured from five different component types, offering flexibility in circuit design.

### Can I simulate 'Opens' and 'Shorts' in Simple Circuit Builder?

Yes, Simple Circuit Builder has a unique 'Basics' screen that allows you to easily see the effects of 'Opens' (infinite resistance) and 'Shorts' (zero resistance) on your circuits. This feature aids in understanding fault conditions.

### What devices does Simple Circuit Builder support?

Simple Circuit Builder is available for iPhone, iPad, and iPod devices. It is designed to run on Apple's mobile operating system.

### Is Simple Circuit Builder free to use?

Yes, Simple Circuit Builder is completely free to use and does not contain any advertisements. It offers its full functionality without any cost to the user.

### How often is Simple Circuit Builder updated?

The latest version of Simple Circuit Builder is 3.0, and it was last updated on April 9, 2025. This indicates a recent update, suggesting ongoing development and support.

### What is the age rating for Simple Circuit Builder?

Simple Circuit Builder has an age rating of 4+. This means it is considered appropriate for users aged four and older, making it suitable for educational purposes for a wide range of ages.

### How does Simple Circuit Builder show circuit changes?

The circuit in Simple Circuit Builder is always 'LIVE'. Any changes you make to components or voltage are immediately reflected, showing the updated voltage, current, and circuit resistance in real-time.

## Version history (last 5 releases)

### 3.0 — 2025-04-09

Updated graphics.

### 2.2 — 2021-07-11

Improved graphics.

### 2.1 — 2021-07-09

Improved graphics!

### 2.0 — 2021-06-13

*  Now supports "suspend" mode.  *

### 1.9 — 2018-10-24

- IOS Picker and Keyboard resistance entry
- Convenient Math calculator included

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## More apps by David White

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All apps by David White: https://appshunter.io/developer/911163945

## Related topics

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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 2026-06-04.*