Apps by Tu Anh Do
Circuit Design app icon

Education

Circuit Design

Tu Anh Do

Free download In-app purchases
Open on Apple

About this app

Circuit Design is a powerful and intuitive circuit simulator and schematic editor for iPhone and iPad. Build electronic circuits with drag-and-drop components, simulate voltage and current in real time, and learn electronics through interactive tools and visual analysis. Create professional circuit diagrams using resistors, capacitors, transistors, LEDs, logic gates, microcontrollers, and more. Watch live current flow animations, analyze voltage levels, and test designs instantly with the built-in simulation engine. Perfect for students, engineers, makers, Arduino enthusiasts, and anyone learning electronics. FEATURES • Modern drag-and-drop circuit editor • Real-time circuit simulation • Interactive voltage and current visualization • Huge electronic component library • Smart wire routing and snap-to-grid design • Oscilloscope and waveform preview • PCB layout preview mode • Apple Pencil support on iPad • AI-powered circuit suggestions and error detection • Educational tutorials and guided projects • Dark mode optimized interface • Export circuits as PNG, PDF, and SVG • Cloud sync and project backup Whether you're designing simple LED circuits or advanced electronic systems, Circuit Design gives you a portable electronics lab directly on your device. The App offers two subscription options: -$7.99 Monthly -$29.99 Yearly Prices may vary by location. Privacy Policy: https://privacy.vanlangapps.com Terms of Use: https://tos.vanlangapps.com Should you choose to upgrade to a Pro subscription, payment will be charged to your iTunes account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period. You may cancel automatic renewal and manage your subscription by selecting Manage App Subscriptions in your iTunes Account settings and selecting the subscription you want to modify. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a Pro subscription, where applicable.

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
0 ratings
0 Aug 15, 2026 · 0 ratings Aug 15, 2026

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking

Price intelligence

1 captured event
Current Free
Historical low Free
Paid → free
Price history
Current Free
Free Aug 15, 2026 · Free Aug 15, 2026

First snapshot captured. The trend line starts after the next crawler price observation.

  1. First observed Aug 15, 2026 · 11:52 PM Free

Screenshots

Circuit Design iPhone screenshotCircuit Design iPhone screenshotCircuit Design iPhone screenshot Circuit Design iPad screenshotCircuit Design iPad screenshotCircuit Design iPad screenshotCircuit Design iPad screenshot