Wonder Circuits vs OhmQuest

Learn digital logic through 62 lessons in 13 chapters. Start with AND, OR and NOT, then build binary adders, feedback circuits, registers, memory and state machines. Assemble a visible four-bit computer and write programs for it. Start with the first 14 lessons and the complete Logic Lab for free. One optional purchase unlocks the remaining 48 lessons and all future core content. No subscriptions or consumables. Build freely in the complete Logic Lab, save reusable chips and share offline blueprints. Works offline, with no accounts, ads or tracking. This is a digital logic simulator; it does not model voltage or current. Campaign lessons still progress in order after purchase.

OhmQuest turns abstract middle-school electricity into interactive buildable, runnable, observable simulation labs for students, parent-child study and electronics fans. 100 progressive challenge levels let you build circuits and observe phenomena to master current, voltage, resistance, heat and electromagnetism. 200 exam exercises require real circuit operation before answering, stopping rote memorization. Free sandbox mode with power supplies, meters, motors and electromagnetic parts. Adjust parameters and view formulas instantly to recreate textbook circuits anytime. No account, no ads, no data tracking; all progress saves locally. For educational use only, not professional electrical engineering. Subject to Apple’s Standard EULA. Apple Standard EULA:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/