A reasoning app with a leaderboard for your study group
Deduce lets your study group, coaching batch or WhatsApp prep group compete on a private daily reasoning leaderboard. Create a Challenge Friends league, share a 6-character join code, and everyone races the same fresh, server-validated puzzle each day — a private board of just your members, not the whole internet. It's free, and it's built for IBPS, SBI and SSC prep.
Create a league — it's free →
How it works
- Create a league from the Groups section on the home screen — you'll get a 6-character join code.
- Share the code on WhatsApp or Telegram; anyone with a Deduce account can join (up to 100 members).
- Play the same daily puzzle. Everyone solves the day's fresh reasoning puzzle, and the league board ranks your members by who solved fastest with fewest attempts.
Why batches use it
- Friendly competition, privately. Your scores stay inside the league — no showing the whole internet an off day.
- The board is honest. Timing, attempts and the answer are validated on the server, so the ranking reflects real solving and can't be gamed.
- It builds the habit together. When your batch is on the board, "I'll practise later" becomes a five-minute daily race you actually keep — that's the streak that builds exam speed.
- National and state boards too. Alongside your private league you can see where you rank across India and within your state.
For coaching institutes
Running a batch? A private league gives your class a shared daily reasoning rep on fresh, can't-leak, provably-correct puzzles. Every puzzle is machine-checked to have exactly one solution before it's served, so there's nothing to memorise and nothing that can circulate as an answer key. See the full feature list, or write to [email protected] about batch use.
Start your group's streak →