💳 Membership

K–5 math memberships, three ways in.

The first Common Core math case is free. A membership unlocks every grade and world plus per-standard mastery tracking — for families and classrooms.

🏠 Family
For children at home
$29 / year
Billed yearly · save ~50%
Children
1
+$4.50 / year per extra child
Your first mystery's free — subscribe to unlock everything & save progress

Everything to crack at home:

  • ✓Every mystery, every grade (K–5)
  • ✓A personal agent login for your child
  • ✓Saved progress, solved cases & badges
  • ✓Works on any device
⭐ Most popular
🍎 Classroom
For teachers · up to 30 students
$49 / year
Billed yearly · one class of up to 30
Up to 30 students · cancel anytime

Everything in Family, plus:

  • ✓Create a class & add up to 30 students
  • ✓Children log in with a name & class code
  • ✓Teacher dashboard — see who's solved what
  • ✓Progress mapped to grade & Common Core standard
🔭 Coming later
🏫 Whole school
Multiple classes & teachers
Coming later
School-wide accounts & admin
We'll be in touch as it gets close

Everything in Classroom, plus:

  • ✓Many classes under one school
  • ✓Teacher & admin roles
  • ✓School-wide progress overview
  • ✓A combined plan with our reading site (coming soon)
🚫 No ads🛡️ Kid-safe🎯 Common Core aligned🪪 Per-agent tracking↩️ Cancel anytime

📊 Every agent is tracked

At home or in class, each student has their own saved profile — progress, mastery and rewards follow them.

🪪
Agent profile
codename, grade, avatar
📈
Skill mastery
by case & standard
⚡
XP & rank
Cadet → Inspector
🏅
Badges & rewards
earned over time

Prices are in USD. Choosing a plan takes you to secure Stripe checkout. Cancel anytime.