What kids practice
- Addition and subtraction
- Multiplication and division
- Fractions, geometry, and measurement
- Elapsed time, money, and data skills
Choose a grade-specific mission track. Every track has 20 turns total — free while we're in beta and gathering feedback.
🛡️ No ads · No accounts · No tracking of your child — just math.
Try it right now
Pick a grade and play a real turn from the adventure. If your kid likes it, the full 20-turn mission is one tap away.
Counting, basic shapes, and simple patterns.
Number sense, early addition and subtraction, and time basics.
Story-driven arithmetic, time, money, geometry, and fractions.
Two-digit operations, place value, money, and elapsed time.
Multiplication, division, area, perimeter, and fractions.
Multi-digit operations, factors, geometry, and rounding.
Fractions, decimals, expressions, percent, and data skills.
More grades in the works
Pre-K and 1st grade are live today. Pick a grade and leave your email — we'll send one message the moment its adventure is ready.
One email per grade launch. No spam, ever. Your email is only used for this notification.
Star Hopper overview
Each grade track keeps the same 20-turn structure, free while we're in beta and gathering feedback. The stories and problems change by grade so the adventure stays age-appropriate and distinct.
Star Hopper is a story-driven math adventure where each grade explores a different space mission while practicing grade-appropriate skills.
Every grade includes 20 turns — all free while we're in beta and gathering feedback.
Pre-K and 1st grade adventures are live today. Kindergarten and grades 2–5 are in development — join the beta list above and we'll notify you when your grade launches.
Yes. There are no ads, no accounts, no chat, and no user-generated content. Gameplay stays on your device, and our analytics only record anonymous events like turns answered — never names, emails, or precise location. Read the full privacy policy.
No. Kids can start playing immediately with nothing to sign up for. Progress is saved in the browser on your device.