# Logic Op — electrical engineering primer

> Digital logic reference with examples and solvers for electrical engineering students. (iPhone/iPad app by Sigma Sky, LLC.)

- Source: https://appshunter.io/ios/app/logic-op/id334567322 (this page in markdown: same URL + `.md`)
- Developer: [Sigma Sky, LLC](https://appshunter.io/developer/320947305)
- Category: Reference, Utilities
- Price: $2.99 (on sale, was $3.99)
- Rating: 5.00/5 from 1 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.3 · 27 MB
- Languages: American English
- Released: 2009-10-18
- Data updated: 2026-07-01
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/logic-op/id334567322/reviews.md

## What is Logic Op?

Logic Op is a pocket reference for basic digital logic. 

Features include:
+ Logic Gates: references and examples
+ Boolean Logic: references and examples
+ Flip-Flops references
+ Karnaugh Maps: references, examples, and solvers
+ Number Conversion: references, examples, and solvers (Binary, Hexadecimal, Decimal, Octal)
+ Two's Complement: examples and solver
+ and more...


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

## Key features

- Logic Gates references and examples
- Boolean Logic references and examples
- Flip-Flops references
- Karnaugh Maps with solvers
- Number Conversion with solvers
- Two's Complement solver

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/logic-op/id334567322/reviews.md

### 4/5 — Good

*2019-01-27*

Thank you , please Add more theme logic

### 1/5 — Simple for price

*2011-10-05*

Doesn't give enough knowledge ur better off buying the digital logics lite
Which gives u exact same knowledge
K-maps are not well explained

### 3/5 — Good for beginners

*2011-03-06*

Getting ready to take my first logic design exam and will be using this a lot as a quick reference on the go. Just the basics is what I need.

### 3/5 — Simple

*2010-10-24*

Yeah the information on here is simple but for me, an engineering student, the convenience of having this app made it worth it to buy. The info is accurate and well presented, despite simplicity

### 2/5 — Too simple

*2010-10-15*

You can figure all if this out with a simple google search.

## Frequently asked questions about Logic Op

### What is Logic Op?

Logic Op is a pocket reference tool designed for basic digital logic concepts. It offers explanations, examples, and solvers for various topics crucial in electrical engineering and computer science.

### Does Logic Op have ads?

No, Logic Op is completely ad-free, providing an uninterrupted learning and reference experience for its users.

### Can Logic Op be used offline?

Yes, Logic Op is accessible offline, making it a convenient tool for studying or referencing digital logic concepts without an internet connection.

### What digital logic topics does Logic Op cover?

Logic Op covers logic gates, Boolean logic, flip-flops, Karnaugh maps, number conversions (binary, hexadecimal, decimal, octal), and two's complement arithmetic, among others.

### What devices is Logic Op available on?

Logic Op is available on iPhone and iPod devices, offering a portable reference for users on the go.

### How much does Logic Op cost?

Logic Op is a paid application, available for a one-time purchase of $2.99.

### Is Logic Op suitable for beginners?

Yes, Logic Op is designed as a primer for basic digital logic, making it suitable for beginners in electrical engineering or computer science who need to learn these fundamental concepts.

### How often is Logic Op updated?

The latest version of Logic Op is 2.4, and it was last updated on July 9, 2022, indicating regular maintenance and potential feature additions.

## Version history (last 5 releases)

### 2.4 — 2022-07-09

- iOS update, 
- added stickers, 
- bug fixes, 
- streamlined the framework of the app to resolve deprecations and make the reference materials more quickly accessible, 
- added references to some commonly used DSP formulas

### 2.3 — 2019-05-11

Bug fixes and performance improvements.

### 2.2 — 2016-03-23

Bug fixes and performance improvements.

### 2.1 — 2014-06-02

- bug fixes
- iOS 7 update

### 2.0 — 2013-05-16

- iOS6 update
- retina display support
- bug fixes
- include additional features:
+ add zoom features to Karnaugh Map, SOP, and POS
+ add logic gates examples
+ add Karnaugh Map examples and solver
+ add number conversion reference, examples, and solver (Binary, Hexadecimal, Decimal, Octal)
+ add two's complement examples and solver

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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 2026-07-01.*