An aptitude school by Saathwik

Formulas fade.
Logic stays.

CSAT, GRE, GMAT — taught by understanding, not memorizing. Anyone can memorise a formula. We teach you why it works.

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The brand promise, made visceral

One question, two ways of thinking about it.

Most students treat aptitude as memory. We don't. Here's what the difference looks like.

If 6 men can finish a job in 10 days, how many days will 4 men take to finish the same job?

The memorized way

Recall the formula. Plug numbers in. Hope it fits.

Step 1. Recall: M₁ × D₁ = M₂ × D₂

Step 2. Substitute: 6 × 10 = 4 × D

Step 3. Solve: D = 60 / 4 = 15 days

“Got the answer. But what if 2 more workers join after day 5? New formula needed.”

The Aptavya way

Understand the unit. The answer falls out.

Step 1. The job is fixed. Measure it in man-days — workers × time.

Step 2. 6 men × 10 days = 60 man-days of work.

Step 3. 60 man-days ÷ 4 men = 15 days.

“Got it. And every variation — joiners, leavers, partial work — uses the same idea.”

What's inside CSAT

A complete coaching shelf — free for now.

Topic concepts, sectional tests, full-length mocks, the strategy playbook, and the Art of Leaving. No paywall. Login required.

Flagship module

The Art of Leaving.

CSAT is qualifying — you only need 66.67 out of 200. The bar is low, but every wrong answer costs you 0.83 marks. Aggressive attempts can pull you below the line. Strategic skipping keeps you above it.

Student A · attempts everything
All 80 questions, no skipping.
Under time pressure, accuracy drops on questions they aren't sure about.
Right answers38
Wrong answers42
Marks gained  (38 × 2.5)+95.0
Marks lost  (42 × 0.83)−34.9
Final score60.1
Below 66.67 · disqualified
Student B · attempts what they know
50 questions. Skipped 30 strategically.
Knew what to leave. Higher accuracy on what was attempted.
Right answers42
Wrong answers8
Marks gained  (42 × 2.5)+105.0
Marks lost  (8 × 0.83)−6.6
Final score98.4
Cleared the 66.67 cut-off · qualifies

Same prep. +38.3 marks — by attempting thirty fewer questions.
The cut-off is just 66.67. Student A scored 60.1 and went home. Student B scored 98.4 and walked into Mains. That's the Art of Leaving.

portrait of Saathwik
The founder

Saathwik. LogicLaunda.

NIT Trichy · IIM Kozhikode · 10+ years teaching aptitude

I built Aptavya because I watched too many bright students fail CSAT — not for lack of effort, but because they were taught to memorize, not to think.

The teaching style here is the same one that worked for me through engineering, MBA, and a decade of training students. Warm, Hindi-friendly, formulas only when they earn their place. Compass on the logo, compass in the method.

1-on-1 with Saathwik

When the PDF isn't enough, book a session.

Stuck on a topic? Walk through it with me. Honest pricing — built for students, not coaching empires.

Quick Doubt
99
15-minute call
  • One specific doubt
  • Whatsapp / Google Meet
  • Recording shared
  • Same-day slots available
Book ₹99 slot
Strategy Pack
399
3 sessions × 30 min
  • Personalised study plan
  • Weak-area diagnostic
  • Mock review across calls
  • Whatsapp support between
Book pack
Open requests

Want a topic covered? Just ask.

Stuck on something I haven't covered yet? A specific question type, a confusing concept, or a tough PYQ — drop it in the box. I read every request.

How this works. Requests come straight to me. I prioritise the most-asked topics and publish new material based on what students are actually getting stuck on. You'll get an email when your topic goes live.
Send Saathwik a request
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I'll reply within 48 hours.
The roadmap

Three exams. One method.

01.

CSAT

UPSC Civil Services Aptitude Test. Quant, Reasoning, Comprehension, Strategy. Free, complete, login required.

Enter the course →
02.

GRE

Quantitative Reasoning, Verbal Reasoning, Analytical Writing — the same logic-first method, applied for graduate admissions.

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03.

GMAT

Quant, Verbal, Data Insights for the Focus Edition. Built for working professionals who can't afford to memorize.

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Stop memorising. Start understanding.

Free signup. Login required. No credit card. Begin with Quant Topic 01: Number System.

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