# Bool Gates — Boolean Digital Circ Simulator

> Boolean logic gate circuit simulator for digital circuit construction and testing. (iPhone/iPad app by carl nohre.)

- Source: https://appshunter.io/ios/app/bool-gates/id1434085676 (this page in markdown: same URL + `.md`)
- Developer: [carl nohre](https://appshunter.io/developer/452344755)
- Category: Education, Productivity
- Price: $0.99
- Rating: 4.00/5 from 3 App Store ratings
- Age rating: 4+
- Requires: iOS 11.0 · 9 MB
- Languages: English
- Released: 2018-09-13
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/bool-gates/id1434085676/reviews.md

## What is Bool Gates?

Construct and simulate [small] circuits of logical boolean gates.

Features and functions:

* Add New logical Gate  (AND, OR, XOR, NOT)
* Add Inverters (circles) on outputs and inputs to produce NAND-  NOR- and unnamed- gates.
* Add I/O Toy components such as toggleable bits,  probes,  7 segments displays, and 2 phase pulse wheels.
* Connect pins via cables.
* Watch the connections turn blue or red, depending on whether they carry a 0 or a 1.
* The simulator is always running. Play with it!


Features of the user interface:

* Zoom by pinch gesture
* Select multiple gates and move them.
* Erase gates and disconnect cables.
* Undo / Redo.
* Select slow simulation speed or the instant mode.
* Select US- or European- gate notation.
* Multiple documents. 


As a Teacher/instructor, you should project your iPad on a big screen (using Quicktime Player or Apple TV).  Here are some additional features relevant for you:

* You can let a visual dot indicate where your fingers touches the iPad
* Inputs and outputs have labels (u0,u1.., . y0, y1...) to make it easy for you to refer to them as you speak.

## Key features

- Construct boolean logic circuits
- Simulate digital gate operations
- Add inverters for NAND/NOR gates
- Utilize I/O components like displays
- Real-time data visualization
- Zoom and multi-select functionality
- Undo/Redo and simulation speed control


## Frequently asked questions about Bool Gates

### What is Bool Gates?

Bool Gates is a digital circuit simulator that allows users to construct and test circuits using various boolean logic gates and components. It provides real-time visualization of data flow, making it an interactive tool for learning.

### What logic gates are available in Bool Gates?

Bool Gates supports fundamental logic gates such as AND, OR, and XOR. It also allows the creation of NAND, NOR, and other gates by adding inverters to the outputs and inputs of existing gates.

### Can I simulate different types of components in Bool Gates?

Yes, Bool Gates includes I/O toy components like toggleable bits, probes, 7-segment displays, and 2-phase pulse wheels for comprehensive circuit simulation.

### How does Bool Gates visualize circuit activity?

Connections in Bool Gates visually change color to indicate the data they carry. Blue represents a '0' (false), and red represents a '1' (true), allowing for immediate understanding of circuit states.

### What are the user interface features of Bool Gates?

The interface offers pinch-to-zoom, multi-select for moving gates, an erase tool for gates and cables, undo/redo functionality, and adjustable simulation speeds. Users can also choose between US or European gate notation.

### Is Bool Gates suitable for educational purposes?

Yes, Bool Gates is designed with educators in mind. Features like input/output labeling and the option to show finger touches on screen are beneficial for presentations and teaching.

### What devices does Bool Gates support?

Bool Gates is specifically designed for iPads. It was released on September 13, 2018, and its latest version is 1.20, last updated on November 28, 2018.

### How much does Bool Gates cost?

Bool Gates is a paid application, available for $0.99. It does not feature in-app purchases or advertisements.

## Version history (last 4 releases)

### 1.20 — 2018-11-28

Some internal improvements and two new I/O-toys: 
A 7-segment display,  and a 2 phase pulse wheel.

### 1.10 — 2018-10-01

1) Added a help-text document.   2) You can now re-arrange rows in the table view.
3) Two different delays in slow speed simulation mode.

### 1.01 — 2018-09-25

A color bug was corrected.

### 1.00 — 2018-09-13

No release notes.

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All apps by carl nohre: https://appshunter.io/developer/452344755

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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 2026-06-10.*