Heads up: this browser isn't saving anything for this site, so progress and settings reset when you leave the page. Everything still works while you're here.
CircuitForge on the web is built the same way as our iOS apps: private by design.
Your work stays on this device
Your progress — best scores, XP and days active — is stored only in this browser (on-device storage). It is never sent anywhere. Clear your browser data and it's gone; nobody else can see it.
The breadboard, robot and gates run right here
The circuit solver, the block-code robot and the logic gates all run inside this page — pure on-device math and logic. There's no server, no simulator in the cloud, and no AI that sees what you build.
No accounts, no ads, no tracking
There is no sign-up and no login. There are no ads and no in-app purchases. There are no third-party trackers embedded in the app.
Built for ages 10–14
The 400 concept questions come straight from the CircuitForge iOS project and are aligned to NGSS engineering-design and computational-thinking standards. The Same Brightness? lab covers NGSS 4-PS3 and MS-PS3 (current in a series loop). A hint appears only after a first try — you think it through first, and mistakes are treated as part of learning. Real circuits need an adult's help; this app is a simulation for learning.
Spark & Anvil is a non-profit, 501(c)(3) pending. Apps stay free forever. This page is a plain-language summary, not legal advice.