| Feature | 123D Circuits (historical) | Tinkercad Circuits (free) | KiCad 8 (free, desktop) | Fusion 360 Electronics (paid) | |--------|----------------------------|---------------------------|-------------------------|-------------------------------| | Browser-based | Yes | Yes | No | No (but cloud sync) | | Arduino simulation | Yes | Yes (better) | No | No | | Full PCB layout | Yes | No | Yes (professional) | Yes | | Auto-router | Basic | No | Yes (external plugins) | Advanced | | 3D PCB view | Basic | 3D model only | Excellent (STEP export) | Integrated with mechanical CAD | | Gerber output | Buggy | No | Industry-standard | Industry-standard | | Learning curve | Low | Very low | Steep | Moderate | | Active development | No | Yes (by Autodesk) | Yes (FOSS community) | Yes |
In 2017, Autodesk streamlined its "123D" apps. The electronics simulation portion was moved to , where it lives today as Tinkercad Circuits . 123d circuits
Beginners can now use Scratch-like blocks to program Arduinos, making it even more accessible for kids. | Feature | 123D Circuits (historical) | Tinkercad
At its peak, it was a fresh, cloud-native alternative to clunky desktop software. Today, the standalone 123D Circuits has been sunset. Its core technologies live on within and, more recently, Fusion 360 Electronics . At its peak, it was a fresh, cloud-native