Simple pricing
Practice problems and calculators are free with an account. Upgrade to Pro for worked solutions, timed exams, and progress analytics.
Free
$0/month
Free account required
- All calculator tools
- Adaptive problem sets (5 per week) — Calculus & Linear Algebra
- Textbook chapter solutions
- XP, levels & weekly leaderboard
Current plan
Pro
$5.79/month
Cancel anytime
- Worked solutions for every practice problem
- Session stats & per-topic accuracy breakdown
- Timed exam mode (Quick, Standard, Marathon)
- Custom exam creation
- New subject areas as they're added
- Step-by-step calculator solutions
- Priority support & feedback channels
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