Comparison

iCircuit 3D vs Optical Flow Drone Navigation

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

Head to head
About

iCircuit 3D

Design, build, and test electronic circuits in a realistic 3D environment. This app offers a virtual workbench with over 150 simulated parts and tools to experiment with circuits, diagnose issues, and visualize component behavior.

Highlights
  • 3D virtual workbench
  • Real-time circuit simulation
  • 150+ physically simulated parts
  • Realistic component behavior
  • Magic smoke failure simulation
  • Import custom 3D models
  • Symbolic component library
Features
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iCircuit 3D gives you an endless virtual workbench to design, build, and test electronics projects in 3D. It combines the robust real-time, always-on simulation engine of iCircuit with modern 3D rendering and physics on iOS and macOS. Do not let the availability of physical parts limit your creativity. Choose from an expansive library of 150+ physically and electronically simulated parts and over 1,000 reference boards to plan layouts, wire circuits, test ideas, and iterate fast. It also includes the full standard component library from the original iCircuit, so you can switch between realistic parts and symbolic circuit elements whenever you want. When powered, LEDs light up realistically, DC motors spin, and speakers make noise. Watch current flow along your simulated wires. See pinouts and color codes directly on components. Tap any part to view live values like voltage and current, then change parameters instantly. If you miswire something or overstress a component, magic smoke will billow from the point of failure so you can quickly diagnose and fix the problem. Add reference photos to the environment, import your own 3D models to mount projects onto, or use Blocks to build enclosures, panels, and simple structures. FEATURES • Tons of resistors, capacitors, and LEDs • Multiple breadboards and wiring elements • Diodes, BJTs, MOSFETs • DC power supplies • Waveform generators (AC, square, sawtooth) • Batteries (AA, AAA, 18650, coin cells, and more) • Switches (SPST, SPDT) • Buzzers and speakers • DC motors and servos • Programmable Arduino elements • The full symbolic iCircuit library (standard components included) • 1,000+ reference circuit boards for layout planning (not fully simulated) • Import board layouts from Eagle (imported layouts are for wiring/layout reference and do not simulate) • Import custom 3D models to attach your projects to, and simulate their behavior on the workbench • Import images for reference or documentation and place them as physical photographs HOW IT WORKS Add parts to the 3D workbench and they land on the table with gravity. Drag parts around, then draw wires between ports to connect them. When a circuit is completed, it starts simulating immediately. Wires stay connected as you move parts, so you can build tidy panels and enclosures, or leave parts scattered like a real bench. iCircuit 3D was designed for fun and exploration, with plenty more to discover as you build. I hope you enjoy this new take on circuit software.

About

Optical Flow Drone Navigation

Features
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Optical Flow Drone Navigation is a powerful tool for computer vision applications, enabling GNSS-independent drone navigation through real-time optical flow visualization and analysis. Key Features: • Real-time optical flow processing • Multiple algorithm support (Farneback, DualTVL1, RLOF) • Live camera feed processing • Depth measurement with back LiDAR sensor • User-friendly interface with customizable settings • Fully compatible with PX4 1.9 and higher for seamless integration Perfect for: • Computer vision researchers • Developers working on motion estimation and navigation • Students learning optical flow concepts • Autonomous drone navigation without reliance on GNSS Whether you’re developing motion-aware drones, studying visual odometry, or building GNSS-denied navigation systems, Optical Flow Drone Navigation equips you with the essential tools in a streamlined interface.

Screenshots

iCircuit 3D4 screens
Optical Flow Drone Navigation4 screens

Verdict

The call

The clearest difference is price: Optical Flow Drone Navigation at Free against iCircuit 3D's $12.99. Optical Flow Drone Navigation also leads on update cadence (every 4 days vs every 8 months). iCircuit 3D's advantage is in-app purchases (none vs 1) and device support (4 vs 2). On ads there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Optical Flow Drone Navigation is free to download; iCircuit 3D costs $12.99 up front. Optical Flow Drone Navigation sells 1 one-off in-app purchase. iCircuit 3D asks for nothing beyond the download.

UpkeepUpdate frequency

iCircuit 3D ships an update every 8 months, Optical Flow Drone Navigation every 4 days. The most recent releases landed on October 14, 2026 and October 1, 2026 respectively.

Scorecard5 real differences · 5 level
iCircuit 3D versus Optical Flow Drone Navigation: the parameters behind the verdict, then further details
ParameteriCircuit 3DOptical Flow Drone Navigation
Price$12.99Free — better
Rating4.1 (72 ratings) — better—
Positive reviews40.8% of reviews—
Number of ratings72 — better—
Update frequencyEvery 8 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS13.0 — better16.6
Further details — not scored
Size142 MB8 MB
Age rating4+4+
DeveloperKrueger Systems, Inc.EMIRHAN CELIK

In-app purchases

None

iCircuit 3D

No in-app purchases

1 purchases

Optical Flow Drone Navigation

One-time1
  • MAVLink Mode Unlock$1.99

Questions

Is iCircuit 3D free?
iCircuit 3D costs $12.99, with no in-app purchases.
Is Optical Flow Drone Navigation free?
Optical Flow Drone Navigation is free to download, with in-app purchases available.
Do iCircuit 3D or Optical Flow Drone Navigation have ads?
Neither iCircuit 3D nor Optical Flow Drone Navigation shows ads.
Which is updated more often, iCircuit 3D or Optical Flow Drone Navigation?
iCircuit 3D ships an update every 8 months, and Optical Flow Drone Navigation every 4 days. Most recently, iCircuit 3D was updated on October 14, 2026 and Optical Flow Drone Navigation on October 1, 2026.

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