Privacy & how it works

MeasureQuest on the web is built the same way as our iOS apps: private by design.

Everything stays on this device

Your progress — best scores, XP and streak — 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 ruler, scale, grid and graphs run right here

The ruler reader, the unit converter, the balance scale, the area grid, the data graphs and the estimation line all run inside this page — pure on-device math. There's no server, no simulator in the cloud, and no AI that sees what you do.

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 9–12

The 400 concept questions come straight from the MeasureQuest project and are aligned to the Common Core Measurement & Data standards. A hint appears only after a first try — you think it through first, and mistakes are treated as part of learning.

Spark & Anvil is a 501(c)(3) public charity. Apps stay free forever. This page is a plain-language summary, not legal advice.

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