Comparison

Electro Sim vs Circuit Design

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Electro Sim

Learn and teach basic electronics with an intuitive circuit simulator. Drag, wire, and combine components on a real-time canvas to visualize current flow and understand DC circuit concepts.

Highlights
  • Intuitive drag-and-drop canvas
  • Real-time DC simulation with current visualization
  • Extensive component library with search
  • Build and reuse custom components
  • Save, load, and export circuits
  • Undo/redo functionality
Features
Read full description

Electro Sim is an iOS app for learning and teaching basic electronics. With an intuitive canvas and component library, you can drag, wire, combine parts, and watch current flow in real time to make DC circuit concepts click. Key Features - Component library with search and categories - Drag-and-drop canvas with rotation, multi-select, and wiring tools - Build custom components to reuse your favorite circuit blocks - Real-time DC simulation with current visualization - Undo/redo (up to 50 steps) - Save/load circuits (JSON) and export snapshots - Supports basic DC components: resistors, switches, wires, LEDs/diodes

About

Circuit Design

Features
Read full description

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.

Screenshots

Electro Sim4 screens
Circuit Design3 screens

Verdict

The call

Electro Sim and Circuit Design are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Electro Sim sells 2 one-off in-app purchases and Circuit Design sells 3 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Electro Sim versus Circuit Design: the parameters behind the verdict, then further details
ParameterElectro SimCircuit Design
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequency—Every 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.0 — better
Further details — not scored
Size3 MB5 MB
Age rating4+4+
Developer剑龙 刘Tu Anh Do

In-app purchases

2 purchases

Electro Sim

One-time2
  • Monthly$0.99
  • Yearly$3.99
3 purchases

Circuit Design

Subscriptions2
  • Circuit Design Premium Monthly$7.991 Month
  • Circuit Design Premium Yearly$29.991 Year
One-time1
  • Circuit Design Premium Lifetime$39.99

Questions

Is Electro Sim free?
Electro Sim is free to download, with in-app purchases available.
Is Circuit Design free?
Circuit Design is free to download, with in-app purchases available.
Do Electro Sim or Circuit Design have ads?
Neither Electro Sim nor Circuit Design shows ads.

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