An electronics puzzle game and hands-on circuit workshop for iPhone and iPad. Diagnose faults on 3D boards with a multimeter and oscilloscope, progress through 72 missions, and build your own circuits on a breadboard. Includes lessons and component guides, in English and French. Works offline. One-time purchase (€7.99 in France; local pricing elsewhere), with no ads, subscriptions or in-app purchases. Requires iOS/iPadOS 26 or later.