Coming from ComputePrep? You're in the right place.

ComputePrep trains your quant speed. Deduce is its sister app from the same makers, and it trains the other scored half: reasoning — one provably-correct logic puzzle a day, across 29 exam puzzle types.

One Pro subscription unlocks both apps, and you can buy the Speed Book right here too — same makers, same account, signed in on both sides.

Get Pro — one plan, both apps

Start Pro — free for 7 days

No card for the free week — every new account starts with 7 days of Pro on both apps. Cancel anytime from My Account.

Free — both dailies, your streaks, the leaderboards. Every day. ₹0 Play free

Pro — everything Pro includes, on both apps. Cancel anytime. ₹199/mo Subscribe

Pro, annual — the same thing, paid once a year. Works out to ₹125/month. ₹1,499/yr Save 37%

Want to try the reasoning daily first? Solve today's puzzle free — or head back to computeprep.com.

A coach on each side

Deduce · reasoning

Saarathi

Your reasoning coach. Ask "why is that the answer?" and he walks the deduction step by step, tracks which puzzle types cost you marks, and tells you what to drill next. Saarathi is a Pro feature — 120 coach turns a day. (The free tier gets Asha, the help assistant, not the coach.)

ComputePrep · quant

Ganak

Your quant coach on ComputePrep. After a drill he explains the fastest route — the vedic shortcut, where your method lost seconds. Everyone meets him on their first drill; Pro keeps him on every drill after that.

What Pro includes — on both apps

On Deduce

Past Puzzles archive
Adaptive practice — unlimited
Saarathi reasoning coach — Pro only, 120 turns/day
3 board hints per daily (vs 1 free)
Streak freeze — bank a spare (2)

On ComputePrep

Unlimited practice drills (vs 20/day signed in)
Ganak coach on every drill verdict, not just your first
Same daily coach allowance — 120 turns/day

Both dailies stay free forever, Pro or not — Deduce's daily puzzle and ComputePrep's three daily drills never go behind the subscription.

How one subscription covers two apps

Sign in with the same Google account on deducepuzzles.com and computeprep.com. That shared sign-in is how the two apps know you're the same person.
Get Pro on either app — ₹199/month or ₹1,499/year, here on Deduce or directly on computeprep.com. Same price, same plan.
The other app unlocks by itself. Your Pro is recognised there automatically — no code to enter, nothing to link by hand, no second payment.

Books & combos

From ComputePrep

The Speed Book

₹199

The full edition of ComputePrep's drill book — every quant and logical-reasoning drill from the free 23-drill sample, plus the rest, with worked solutions and a target time on each one. PDF, yours to keep.

Get the Speed Book · ₹199

Also buyable directly on computeprep.com/speed-book — same makers, same book, and the download link is emailed to you the moment you pay either way.

The Deduce Puzzle Book

₹99₹199

150 solver-validated puzzles across all 29 reasoning types — seating, floor, box, scheduling, syllogisms, data sufficiency and more — with a full answer key. Yours to keep, exam-day friendly PDF.

Get the book · ₹99 About the book

Pro — quarterly

₹499₹597

Three months of Pro on both apps, paid once — no auto-renewal. Lock in your prep window ahead of an exam date.

3 months · ₹499

Free PDFs — no email, no sign-up

⬇ 29 reasoning puzzles (PDF) The Speed Book — 21 free drills → Vedic Speed Kit — free shortcuts →

The Speed Book's full edition is ₹199.

Questions? [email protected] · FAQ · Refunds