Get Reef Rescue

Kids solve math to clean up the ocean and rescue real sea creatures. Free to start, and free of everything else.

iPhone or iPad Download on the App Store Android Get it on Google Play Try it first Play in your browser, nothing to install

Educational App Store Certified Five stars from an independent review by educators, September 2026

For parents

No ads. Not any kind, not ever.
No accounts, no sign-in, no chat. Nobody can contact your child.
No data collection. Progress never leaves the device.
Every purchase sits behind a parent-only math problem.
Fully voiced, so children who cannot read yet can play on their own.

A new ocean opens almost every month — Halloween's Midnight Trench is next.

Five math levels, from first counting at ages 2 to 4 up through times tables at 10 and over. Two of the eight oceans are free in full. The rest are one-time unlocks, never a subscription.

Support Privacy Spangler Development