# Circuit Elements — electrical engineering primer

> Electrical engineering reference for fundamental circuit concepts. (iPhone/iPad app by Sigma SKY, LLC.)

- Source: https://appshunter.io/ios/app/circuit-elements/id346828971 (this page in markdown: same URL + `.md`)
- Developer: [Sigma SKY, LLC](https://appshunter.io/developer/320947305)
- Category: Reference, Utilities
- Price: $0.99 (on sale, was $4.99)
- Rating: 4.00/5 from 5 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 25 MB
- Languages: English
- Released: 2009-12-20
- Data updated: 2026-06-05
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/circuit-elements/id346828971/reviews.md

## What is Circuit Elements?

Circuit Elements is an application originally designed for undergraduate college students majoring in electrical engineering, but since its inception, it has been used by hobbyists, professionals, and those who simply have an interest in fundamental circuits. 
It is a quick reference to basic circuits topics such as:
+ impedance, 
+ magnitude of impedance, 
+ phase angle, 
+ admittance, 
+ and much more...

If you like this app, please check out our other apps and stickers in the Apple App Store. 

No in-app purchase.
No ads.
No subscriptions.
Accessible offline.

## Key features

- Impedance calculations
- Magnitude of impedance
- Phase angle
- Admittance
- Offline accessibility

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/circuit-elements/id346828971/reviews.md

### 4/5 — Grand poobah

*2011-12-03, version 1.0*

This app is a series of standard equations that technicians use in everyday life. It doesn't give you answers just the equations so its like having a preloaded cheat sheet which is very cool. 3 bucks is a fair price but 99 cents would probably increase its popularity amongst us geeks

### 5/5 — Great reference material for ITT students

*2010-02-12, version 0*

Great reference material for ITT students.  How about adding 555 timer and a calculator for changing the frequencies between to or more timers. That would be awesome. Maybe a 8051 programmable chip schematic!

## Frequently asked questions about Circuit Elements

### What electrical engineering topics does Circuit Elements cover?

Circuit Elements covers fundamental circuit topics including impedance, magnitude of impedance, phase angle, and admittance. It's designed as a quick reference for these core concepts.

### Who is Circuit Elements designed for?

Circuit Elements was initially created for undergraduate electrical engineering students but is also used by hobbyists, professionals, and individuals interested in basic circuits. Its broad appeal makes it suitable for various levels of expertise.

### Can I use Circuit Elements offline?

Yes, Circuit Elements is accessible offline. This feature allows users to access its reference material without needing an internet connection, making it convenient for use anywhere.

### How much does Circuit Elements cost?

Circuit Elements is a paid application priced at $4.99. There are no in-app purchases, subscriptions, or ads associated with its purchase.

### Does Circuit Elements have ads?

No, Circuit Elements does not contain advertisements. The app is ad-free, providing an uninterrupted user experience.

### What devices is Circuit Elements available on?

Circuit Elements is currently supported on iPhone devices. It is designed to function on this platform.

### How often is Circuit Elements updated?

The latest version of Circuit Elements is 2.5, last updated on April 13, 2026. While specific update frequency isn't detailed, this indicates ongoing development and maintenance.

### What is the age rating for Circuit Elements?

Circuit Elements has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content concerns.

## Version history (last 5 releases)

### 2.5 — 2026-04-13

This version contains iOS update and performance improvements.

### 2.4 — 2025-07-08

Thank you for using this app.
This version has been redesigned to support the new iOS update.

### 2.3 — 2022-05-28

- iOS required update,
- fix deprecations, 
- add stickers, 
- bug fixes

### 2.2 — 2019-04-29

bug fixes and performance improvements

### 2.1 — 2016-03-22

Bug fixes and performance improvements.

## More apps by Sigma SKY, LLC

- [cursive](https://appshunter.io/ios/app/cursive/id327053944)
- [Logic Op](https://appshunter.io/ios/app/logic-op/id334567322)
- [scarves](https://appshunter.io/ios/app/scarves/id376473584)
- [engineering economics](https://appshunter.io/ios/app/engineering-economics/id381458021)
- [anotherABC](https://appshunter.io/ios/app/anotherabc/id516045568)

All apps by Sigma SKY, LLC: https://appshunter.io/developer/320947305

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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 2026-06-05.*