Logic Circuits Simulator
Digital design, made portable
$0.99 · Designed for iPad
Built from scratch for V3. Sequential logic, Karnaugh maps, reusable chips, schematic-grade routing. Your full digital design course, on iPhone and iPad.
Logic Circuits Simulator is the digital design tool built for the way you actually study.
Build circuits with IEEE-standard gates, sequential logic, Karnaugh maps, and reusable chips, all with schematic-quality wire routing that looks like the diagrams in your textbook.
Rebuilt from the ground up for Version 3.
COMBINATIONAL LOGIC
Design with the full set of IEEE-standard gates: AND, OR, NOT, NAND, NOR, XOR, XNOR. Grow any gate from 2 to 8 inputs as your designs scale. Drop in constant rails, Ground and VCC, for clean schematic structure. Every gate auto-labels with its Boolean expression, complete with proper overlines for negation.
SEQUENTIAL LOGIC
Build counters, registers, and state machines that simulate live. Adjustable-speed clock with pause and single-pulse control. D, T, and JK flip-flops. SR latches. Every memory element exposes both Q and Q' outputs, the way your textbook draws them.
SCHEMATIC-QUALITY WIRE ROUTING
Wires route themselves with orthogonal paths, rounded corners, hop bridges over crossings, and junction dots at branches. Your circuits look like real schematics, not tangled diagrams.
KARNAUGH MAPS & MINIMIZATION
Flip any truth table into a Gray-coded Karnaugh map for 2-4 variables. See covering groups in color and the minimized sum-of-products expression, generated with Quine-McCluskey, the same algorithm your textbook uses.
REUSABLE CHIPS
Package any combinational circuit as a custom IC with named pins. Stamp instances like real chips, U1, U2, U3, into bigger designs. Build a full adder once, then drop four instances into a 4-bit ripple-carry adder. Your chip library syncs across devices via iCloud.
TRUTH TABLES
Generate truth tables for any circuit with up to 8 inputs. Intermediate gate columns show the signal flow, not just the answer. Export to CSV for your lab reports.
7-SEGMENT DISPLAY
Drive a 7-segment display with 4 binary inputs to show hexadecimal digits, perfect for visualizing counters, decoders, and arithmetic circuits.
BUILT-IN EXAMPLES
Open working classics with one tap: half adder, full adder, 2-to-1 multiplexer, 2-to-4 decoder, NOR-gate SR latch, 2-bit ripple counter. Examples open as editable copies, learn, modify, and save your own version.
ICLOUD SYNC
Your saved circuits and custom chips sync across iPhone and iPad via iCloud. Start a design on iPad, finish it on iPhone. On-device-only mode available in Settings.
SHARE YOUR WORK
Export circuits as .lcs files to share via Mail, Messages, or Files. Embedded chips travel with the file, recipients see your design exactly as you built it. Export PNG snapshots and CSV truth tables for reports.
WHY V3 IS DIFFERENT
Logic Circuits Simulator V3 is a ground-up rewrite. New canvas, new tools, new everything. Circuits saved in 2.x migrate automatically the first time you open V3.
Built by an engineering student, for engineering students. Always ad-free. No in-app purchases. No subscriptions.
HAVE FEEDBACK?
Email hkem.moh.ar@gmail.com. V3 was shaped by feedback from users like you, and the next version will be too.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
What's New in V3
Logic Circuits Simulator has been rebuilt from the ground up.
Your saved circuits from V2 migrated automatically, find them
in your library.
Here's what's new:
Reusable chips
Package any circuit as a custom IC. Stamp instances, U1, U2,
U3, into bigger designs.
Sequential logic
Adjustable-speed clock with D, T, JK flip-flops and SR latches.
Build counters and state machines.
Karnaugh maps
Flip any truth table into a K-map with automatic minimization.
Schematic-grade wires
Hop bridges over crossings, junction dots at branches, paths
that route themselves.
iCloud sync
Saved circuits and custom chips sync across iPhone and iPad.
There's more in the Component Reference (Settings → Quick Start).
[ Start Building ]
The developer, Abdulhakim Aloraini, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Abdulhakim Aloraini
- Size
- 3.3 MB
- Category
- Education
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Abdulhakim Aloraini
