Master math with s-curve.app
A structured, mastery-based math program with 340 booklets across 16 levels, interactive grid games, and printable worksheets — built on the proven science of the learning curve.
Twenty focused minutes a day. Every level engineered so the next one feels earned.
Printable worksheets that actually build mastery
Work through hundreds of carefully sequenced worksheets — from Pre-A foundations through algebra and calculus. Every worksheet is tracked against a Standardized Completion Time so you know exactly when a skill is mastered.
- Print at home or complete on screen
- Auto-graded accuracy with instant feedback
- SCT-based mastery: speed + accuracy
- Sequential unlock — skills build on each other
Worksheets
100 Series
ACTIVEElementary Mathematics
Grid puzzles that make fluency fun
Three progressively harder 3×3 grid games train arithmetic fluency through daily challenges, timed competition, and unlimited practice. Play the Sum Grid right here — no signup required.
- Sum GridMatch row & column sums. Beginner tier — great for younger learners.
- Multiplication GridMatch products instead of sums. Intermediate tier — times-table fluency.
- Combined GridSums AND products, no pre-filled cells, no hints. Expert tier.
- Global leaderboardsRanked daily challenges with percentile rankings and XP rewards.
A complete curriculum from counting to calculus
Three tiers, seven topic families, and 100+ levels organized so every skill builds naturally on the one before it. Inspired by the Kumon worksheet model — rebuilt for the web with real-time feedback and analytics.
- 100 Series — Elementary Mathematics (160 booklets)
- 200 Series — Algebra & Pre-Calculus (80 booklets)
- 300 Series — Advanced Math & Calculus (100 booklets)
- Mastery badges, XP rewards, and rank progression
Curriculum
100 Series
Elementary Mathematics
200 Series
Algebra & Pre-Calculus
300 Series
Advanced Math & Calculus
Built for parents who believe math is built, not taught
s-curve is a guided practice curriculum for children ages 5–12 whose parents want structure, sequencing, and real mastery — not another drill app.
Homeschool families
A complete, sequenced math spine for home-educators who need structure, accountability, and a clear path from counting to calculus.
Supplementing school
For parents whose child is ahead, behind, or just needs daily deliberate practice outside of classroom pacing.
Daily deliberate practice
Twenty focused minutes a day, measured by SCT-based mastery — not time spent, but mastery earned.
Choose your plan
Same full access. Pick the billing rhythm that fits.
Quarterly
Full access, billed every 3 months
That's $10.00/month — cancel anytime.
- Access to full Learn curriculum
- Structured learning path with 100+ levels
- SCT (Standardized Completion Time) tracking
- Progressive difficulty levels
- Mastery-based advancement system
- Unlimited practice sessions
- Advanced progress analytics
- Achievement badges & rewards
- XP and leveling system
- Ad-free experience
- Priority support
Annual
Save 17%Full access, billed yearly
That's $8.33/month — our best rate.
- Access to full Learn curriculum
- Structured learning path with 100+ levels
- SCT (Standardized Completion Time) tracking
- Progressive difficulty levels
- Mastery-based advancement system
- Unlimited practice sessions
- Advanced progress analytics
- Achievement badges & rewards
- XP and leveling system
- Ad-free experience
- Priority support
Secure checkout via Stripe · Cancel anytime · 7-day money-back guarantee
Why learners choose s-curve.app
Built on the science of the learning curve — slow start, rapid acceleration, lasting mastery.
Mastery-based, not time-based
Advance when you actually own a skill — measured by SCT (Standardized Completion Time), not by how many hours you sat.
Real progress analytics
Accuracy, speed, streaks, XP, rank. See exactly where you are on the learning curve and what to work on next.
Rewards that motivate
Achievement badges, level-ups, and leaderboards turn daily practice into a game worth showing up for.
Frequently asked questions
Can I cancel anytime?
Yes. Cancel from your profile with one click. You'll keep full access through the end of your billing period.
Is there a refund policy?
We offer a 7-day money-back guarantee. If s-curve isn't right for you within the first week, contact support for a full refund — no questions asked.
What age range is this for?
The 100 Series covers elementary math (roughly ages 5–12). The 200 and 300 Series extend into algebra, pre-calculus, and calculus — so the same account can grow with a learner for years.
How is this different from Khan Academy or Kumon?
Khan Academy teaches concepts via video. Kumon uses paper worksheets scored by a tutor. s-curve is the web-native combination: structured worksheets with instant feedback, SCT-based mastery, interactive grid games, and real-time analytics — all priced like a single month of Kumon for a whole year.
Do I need to print anything?
No. Worksheets work entirely on screen with auto-grading. If you prefer paper, every worksheet is also print-ready with a clean printable layout.
Is there a free tier?
The grid game demos on the homepage are free to play without signing up. The full curriculum — all 340 booklets, SCT tracking, analytics, and ranked grid modes — requires a subscription. Try it risk-free with the 7-day money-back guarantee.
Ready to climb the curve?
Join thousands mastering math the structured way. From $29.99.
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