HDLSim
Verilog, CPLD & 3D breadboard
Only for iPhone
Free · In‑App Purchases
iPhone
Write Verilog, simulate the EPM240 CPLD and build your circuits as a 2D schematic and a 3D breadboard, all on your iPhone, Guided labs included.
HDLSim is a digital electronics lab on your iPhone. Write Verilog, compile it for the EPM240 CPLD and watch it run on a virtual development board, with a 2D schematic and a 3D breadboard.
LD and watch it run on a virtual development board, with a 2D schematic and a 3D breadboard.
WHAT YOU CAN DO
• Verilog editor with compilation and error messages.
• EPM240 CPLD simulator: load your design and test its inputs and outputs on the board.
• 2D schematic: place components, wire them and simulate the circuit.
• 3D bench and breadboard: the same circuit built in 3D, with wires, resistors, LEDs and more.
• Guided labs: Ohm's law, dividers, diodes and rectifiers, transistors, op-amps, logic gates, adder, latch, 555 timer and 7-segment display.
• Your projects are stored on your iPhone.
PLANS
• Free: Verilog editor, CPLD simulator, 2D schematic and 3D bench, the 5 basic labs and the 170-point mini breadboard.
• Pro: everything in Free, every lab in the catalog and 400- and 830-point breadboards.
Pro is an auto-renewing subscription, monthly or yearly, at the price shown in the app. Payment is charged to your Apple ID when you confirm the purchase. The subscription renews automatically unless you cancel it at least 24 hours before the end of the current period. Manage or cancel it in Settings > your name > Subscriptions.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy: https://hdlsim.web.app/privacy.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Julio Francisco Reyes Gonzalez, 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 Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- User Content
- Identifiers
- Other Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Julio Francisco Reyes Gonzalez
- Size
- 5 MB
- Category
- Education
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- In-App Purchases
Yes
- HDLSim Pro Annual $20.00
- HDLSim Pro Monthly $2.00
- Copyright
- © 2026 Julio Francisco Reyes Gonzalez
