One pass. The whole course.
Pay once for a semester of math, from basic math to differential equations. No subscription and no auto-renewal: when your term is done, you're done.
Free
$0
with a free account
- The first section of every chapter (18 ready now), with videos and practice
- The coach, unlimited: hints, step-by-step help and answer checks
- AI tutor, 15 answers a day
- Progress tracking
- Not included: The rest of each chapter
- Not included: Live tutor sessions
Semester Pass
$49
one-time · 4 months of access (120 days)
- Every lesson in all 18 chapters (216 ready now, more added regularly)
- All 1501 practice problems with hints and worked solutions
- Unlimited AI tutor answers
- 2 live tutor sessions included (30 min each)
- Buy again any time to add another 4 months
Live tutor tickets
One ticket is one 30-minute live chat with a human tutor. The Semester Pass comes with 2, and pass holders can add more any time. A ticket is only used when a tutor actually joins your chat, and tickets don't expire.
1 ticket
$15
5 tickets save $15
$60
Buy tickets from your account page once you have the Semester Pass.
Is this a subscription?
No. You pay once and get 120 days of access. Nothing renews automatically.
What if I need more time?
Buy another pass before or after yours ends. A new pass starts when your current one runs out, so you never lose days.
Can I try it first?
Yes. The first section of every chapter is free, including practice and the coach. Just create an account.
How do live tutor sessions work?
In the tutor chat, tap Talk to a tutor. You'll join a queue while the coach and the AI tutor keep helping. When a human tutor joins, one ticket is used and you get 30 minutes with them, with a heads-up 5 minutes before the end.
How do I pay?
Securely through Stripe, by card or wallet. You get an emailed receipt, and your purchases are listed on your account page.