Plans built for learners, families, and classrooms.
Access the full 300-root curriculum free of charge as an independent learner. Upgrade for adult diagnostic dashboards, family oversight, or institutional classroom management.
Free Learner
Complete, unrestricted access to the entire root curriculum for motivated self-directed learners.
- All 300 morphemes across all 3 developmental stages
- Full catalog of 2,650 words & 1,347 SAT power words
- Daily adaptive SM-2 spaced retrieval practice
- AI sentence composition studio (standard rate-limit)
- Zero ads, zero trackers, 100% private
Family Plan
Deep diagnostic transparency, retention tracking, and SAT readiness scoring for parents.
- Up to 4 learner profiles under one parent account
- Dedicated Parent Diagnostic Portal (/family)
- “Explain This Queue” algorithmic transparency
- Projected SAT & ACT Verbal Readiness scoring
- Priority AI sentence writing evaluation
Classrooms & Schools
Roster management, teacher-controlled family invitations, and district compliance agreements.
- Teacher dashboard (/teach) with 6-character join codes
- Teacher-generated family invite codes for parents
- Real-time class practice velocity & pacing alerts
- FERPA & COPPA Data Protection Agreement (DPA)
- Roster CSV imports and district purchase order support
Common Questions About Radix
Is the individual student plan truly free?
Yes. Any learner can create an account (or practice as a guest) and access all 300 morphemes, all 2,650 vocabulary items, and unlimited daily spaced review sessions without paying a cent.
Do you show ads to children or sell student data?
Never. We have a strict zero-advertisement policy and will never sell, rent, or monetize student data under any circumstances. We operate in full compliance with COPPA and FERPA.
How do teacher-generated family access codes work?
To strictly protect minors from unauthorized family linking or peer sharing, students cannot generate share codes. Only verified teachers and school administrators can generate single-use, 24-hour access codes for parents from their classroom roster.
What devices does Radix support?
Radix is a responsive progressive web application that runs smoothly on student Chromebooks, iPads, tablets, desktop browsers (Mac and Windows), and mobile phones without requiring app store installation.
Can schools pay via Purchase Order or credit card?
Yes. We accept official school and school district purchase orders, automated credit card billing, and ACH wire transfers with standard net-30 terms.