Turn concept maps into guided learning.
Personalized mastery paths for every child.
Used by families to build real understanding in math, science, and beyond.
Free
$0
Free forever
- All concept pages & guides
- Interactive concept maps
- Basic learning path
- 3 mastery checks per day
SOS Pro
$99/yr
$8.25/mo
Save 31%
- Everything in Free
- Unlimited mastery checks
- Adaptive next-concept guidance
- Visual mastery map
- Up to 3 child profiles
- Parent dashboard
Family Plus
$149/yr
$12.42/mo
Save 35%
- Everything in Pro
- Up to 5 child profiles
- Advanced parent dashboard
- Progress reports
All plans include
Compare plans
| Feature | Free | Pro | Family+ |
|---|---|---|---|
| Concept pages & maps | Yes | Yes | Yes |
| Guided learning path | Basic | Adaptive | Adaptive |
| Mastery checks | 3/day | Unlimited | Unlimited |
| Visual mastery map | -- | Yes | Yes |
| Child profiles | 1 | 3 | 5 |
| Parent dashboard | -- | Yes | Advanced |
| Progress reports | -- | Yes | Yes |
| Concept clarification | Limited | Unlimited | Unlimited |
How it works
Try SOS Pro risk-free.
Cancel anytime. No contracts. No hidden fees.
For schools
Class dashboards, assignment tracking, and curriculum insights. Contact us for school pricing.
Frequently Asked Questions
What's included in the free plan?
All concept pages, guides, and interactive concept maps are free forever. You can also build a basic learning path and try 3 mastery checks per day.
What does SOS Pro add?
SOS Pro unlocks unlimited mastery checks, a visual mastery map showing your child's progress across the concept graph, adaptive next-concept recommendations, and up to 3 child profiles with a parent dashboard.
What's the difference between Pro and Family Plus?
Family Plus supports up to 5 child profiles (vs 3 in Pro) and includes an advanced parent dashboard with progress reports. It's designed for larger families.
Can I cancel anytime?
Yes. Both monthly and annual plans can be canceled at any time. You keep access through the end of your current billing period.
How is this different from tutoring?
Tutoring is reactive — you hire someone when a problem is already visible. SOS Pro helps identify fragile understanding before it becomes a gap, reducing the need for intervention.