Privacy & how it works

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

Everything 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.

How it works

In the DNA Lab, build the matching DNA strand using the base-pairing rule (A–T, G–C), transcribe DNA into mRNA and read a codon into its amino acid, or fix a single wrong base like a gene editor. In the Punnett Square Builder, fill the 2×2 cross grid to predict offspring and read the phenotype ratio — then flip it and work backwards from an offspring ratio to name the parents. Or run a Concepts kit: a short round of questions. A hint appears only after a first try, so you think it through first — and mistakes are treated as part of learning.

Built for ages 9–14

The 400 Concepts questions come straight from the GeneForge iOS design and are aligned to NGSS middle-school life-science standards for heredity and biotechnology (MS-LS3, MS-LS4). Everything works with the sound off and can be played entirely by keyboard.

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

Full parent guide Site privacy policy