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.
DeduceQuest 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 and XP — 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.
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 9–14
The 400 Concepts questions come straight from the DeduceQuest iOS app. Every puzzle is framed as predict → observe → explain: you commit a guess first, and a wrong guess is treated as a clue that narrows the answer — never a scold. A hint appears only after a first try.
Spark & Anvil is a non-profit, 501(c)(3) pending. Apps stay free forever. This page is a plain-language summary, not legal advice.