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Chapter Mastery · · latest version

Master a chapter
in 7 days.

Not "here are some questions." A deliberate 7-day arc from "shaky" to "solid." Diagnostic on Day 1, daily drills on Days 2-5, mid-arc mock on Day 4, mastery test on Day 6, certificate on Day 7. AI coach coaches at every milestone.

Free · 1 per quarterACE · 1/month + certificateGROW · 3/month + AI coachSCALE · unlimited
Chapter Mastery 7-day arc with progress
The arc

Seven days. One chapter. Solid.

Day 1

Diagnostic

20 questions across the chapter. Find out where you actually stand.

Day 2

Drill: Gaps

Targeted practice on the concepts you got wrong on Day 1.

Day 3

Drill: Depth

Harder variants of the same concepts. Application-level problems.

Day 4

Mid-Mock

A mini-mock covering the whole chapter. Timed, graded, analysed.

Day 5

Drill: Speed

Time-pressure variants. Can you solve it fast enough for the exam?

Day 6

Mastery Test

The final exam. 30 questions, NTA difficulty, full analysis.

Day 7

Certificate

Score ≥ 80%? Shareable certificate. Below? Retry next week.

Why it works

Structure beats willpower. Every time.

The biggest problem with self-study is the plan. "I'll do Thermodynamics this week" turns into three hours on Day 1, nothing on Day 2, and guilt by Day 5. Chapter Mastery removes the planning. Just show up each day. We handle the rest.

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Diagnostic-first — we figure out what you don't know before wasting time on what you do.
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Progressive difficulty — Day 2 is hard. Day 5 is harder. Day 6 is exam-level.
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Certificate as proof — share it, pin it, or just know that this chapter is done.
Diagnostic test Day 1
Daily drill interface
Mid-arc mini mock
Mastery radar result
AI coach milestones · GROW tier

A coach at every checkpoint.

On GROW tier and above, AI coach joins your mastery arc. After the diagnostic, it explains your weaknesses. After the mid-mock, it adjusts the remaining drills. After the mastery test, it tells you exactly what to do next — or congratulates you with a certificate and recommends the next chapter.

GROW · milestone coachingSCALE · trajectory integration
AI coach · Day 4 checkpoint
"Your mid-mock: 18/25. Good — but Numerical Problems in Thermodynamics are still leaking marks. I'm adding 3 extra numerical drills to Day 5."
"At this rate you'll hit 82% on the mastery test. That's a pass, but tight. Push for 88+ and the retention sticks."
Free · 1 chapter per quarter · no card

Pick a chapter. Own it in a week.

Start with the one that keeps showing up in mocks and keeps going wrong. Seven days from now, it won't.