SSB screening reasoning practice — Master Mental Ability

Why start now

Days at the board. You have to get past the first one.

Everything you are told to prepare — the mathematics, the general knowledge, the current affairs — gets you to the gate. Then Stage I opens with an intelligence rating test made of the two things nobody was told to practise: verbal reasoning and non-verbal reasoning.

Both are trainable, and unusually so, because they are one skill under two names — seeing structure in words, and seeing structure in shapes. It builds over months of short sessions, and it stays.

It is also the one part of those days that is a skill rather than a character. Train the part that can be trained.

Start today!

What · the exam

Reasoning appears in two places, and only one of them is a written paper.

UPSC's notifications set out the NDA and CDS written scheme; the Air Force's notification sets out both its paper and its board. This is what they say.

The written exam

NDA and CDS have no reasoning section. AFCAT does.

Objective papers, with a penalty for wrong answers

NDA — Mathematics, 300 marks, and a General Ability Test of English and general knowledge, 600
CDS — English, General Knowledge and Elementary Mathematics, 100 marks each
A third of the marks for a question are deducted for a wrong answer in both
AFCAT — 100 questions, 300 marks, two hours, and reasoning is one of its four subjects

Two of the three have no reasoning at all. We say so.

The board

Stage I is the Officer Intelligence Rating test, and it is a screen

Stage I on day one · Stage II over the days after

Stage I — the Officer Intelligence Rating test with the Picture Perception and Description Test
Candidates who do not qualify are sent back on the first day itself
Stage II — psychological tests, group testing tasks, the interview and the conference
In NDA the board carries 900 marks, the same as the entire written exam

Stage I is reasoning. The rest is days of something else.

How · train the skill

Verbal and non-verbal reasoning, trained the way a skill is trained.

An intelligence rating test isn't a syllabus you can read. It's a thinking skill, built by practising the right questions, the right amount, over time. That's exactly what Master Mental Ability does — and the Air Force's own notification names its reasoning section in the same two words the app is built from: verbal and non-verbal reasoning.

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Adapts to you

Harder as you improve, easier when you slip. No time wasted on what you've already got.

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Back before you forget

Spaced repetition returns a question right as it's about to fade — so it's still there on the day.

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Solve first, then see

You reason it out before the answer shows. That effort is where recognition gets built.

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Calm before the clock

A moment to settle before each session. The same calm a timed hall takes away.

What this doesn't cover: the NDA and CDS written exams have no reasoning section at all — they are mathematics, English and general knowledge, and this app won't help with them. What we train is the reasoning in the SSB's Stage I screening, and the reasoning in AFCAT. The rest of the board — the psychological tests, the group tasks, the interview and the conference — is days of something else entirely, and no app prepares it. Nor does anything here prepare the physical or medical standards.

No download needed

An app you don't download.

Open it in the phone's browser and start at once. One tap adds it to the home screen — it sits there like any app. Works on an older phone, a shared phone, any phone. No app store, nothing to chase, no space taken up.

Opens instantlyAdd to home screenWorks on any phoneNothing to install

See it in seconds

No account, no card, no install. Solve one full session, then decide.

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Built by

In 2007, in his second year at IIT Delhi, Vineesh wrote a book — Master Mental Ability in 30 Days. It has sold year after year ever since, without the publisher ever marketing it.

In the years since, he built other learning products and spent a decade working with children of every background in a holistic learning centre.

This app goes far beyond that book — everything he's learned about how people actually learn, built into something you practise, not just read.

No risk to you

Don't trust us. See it work.

Try free

Solve a full session, no registration. Decide nothing yet.

Register

Like it? Sign up for 2 more days free. No payment, no auto-debit.

Practise daily

A little each day. The app decides what to practise and when to bring it back.

Share to keep learning free

Invite a friend preparing for the SSB — you both earn more free days.

Your questions

Common questions

Is it really free? Will money get taken from my account?

It's free to try — no signup to start, no card, no auto-debit, nothing taken silently. Later, one payment unlocks all the content for a full year — it's a one-time payment, not a subscription, and never an auto-debit. Exact pricing is coming soon. And you'll always be able to try free first — and share the app to keep learning free.

Will this help me clear NDA, CDS or AFCAT?

Not the NDA or CDS written paper — it has no reasoning section, and we'd rather tell you that than sell you something. What this trains is the reasoning in the SSB's Stage I screening, and the reasoning subject in AFCAT. Mathematics, English, general knowledge and the rest of the board all need their own preparation. What we do, we do properly.

What exactly is the OIR test?

The Officer Intelligence Rating test, sat on day one along with the Picture Perception and Description Test. The notifications call Stage I a screening test and say candidates who don't qualify are sent back the same day. What they publish is its structure — verbal and non-verbal reasoning. Question counts and the qualifying rule are not published officially, so we don't quote them.

I have very little time before my board date. Is this any use?

Some. Practice always beats no practice. But be honest with yourself about what a screening test means: recognition is built over months, not in a week. Start anyway — the skill doesn't expire between attempts, and most candidates get more than one.

Is the app in Hindi?

The full app is coming in Hindi — questions and solutions both. For now it's in English. Worth knowing either way: UPSC sets NDA's mathematics paper and the general knowledge part of the General Ability Test in Hindi as well as English, and the same for CDS's General Knowledge and Elementary Mathematics papers. AFCAT is conducted in English only.

When are these exams, and where do I apply?

NDA and CDS applications are only on UPSC's own site, upsc.gov.in; AFCAT on the host named in the current Air Force notification, which was afcat.edcil.co.in for cycle 02/2026; army entries on joinindianarmy.nic.in. Never through an agent and never through us. UPSC's calendar puts the NDA & NA (II) and CDS (II) 2026 papers on 13 September 2026, and the next notification for both on 2 December 2026. Confirm the current cycle at upsc.gov.in.

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The test on day one

Where reasoning decides