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.
ReckonQuest 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. Every lab runs entirely on this device.
Built for ages 9–14 — structure over key words
The 400 Concepts questions come straight from the ReckonQuest iOS design. We teach real solving structure (name the unknown, draw it, guess-and-check, work backwards, check it makes sense) — never the “key-word” shortcut that breaks on harder problems. A wrong answer is framed as a step toward the method, never a scold, and 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.