🎯 QUANT & TRADING INTERVIEW PREP · iPHONE

Train for Your Trading Interview

Quote bid/offer on a 52-card deck. Race through 80 arithmetic problems in 8 minutes. Solve the Monty Hall problem cold. 30 games and 200 original brain teasers, each with a worked solution.

Recruiting season starts September — start now

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🔒 No account required. No sign-up. Free to download.

GAMES

BRAIN TEASERS

FREE GAMES

⚡

73/80

Math Score

🎯

Ready

Readiness

HOW IT WORKS

Interview-ready in 3 steps.

Download & start practicing

No account needed. Jump into a game or follow the built-in study plan, which tells you what to practice each day.

Practice 20 min/day

Market making, mental math, brain teasers. Spaced repetition focuses your time on the questions you keep getting wrong.

Walk in confident

Analytics track your accuracy, speed and P&L in every game, so you can see your progress before the real thing.

WHY QUANTRIVAL

Built around
real interview formats.

Every game trains a skill trading interviews actually test: making markets, fast arithmetic, probability and clear reasoning under pressure.

Market Making Simulator

A classic trading-interview format: you quote bid/offer on a 52-card deck as cards are revealed. Tighten your spreads and track P&L, hit rate and spread tightness over time.

THE DECK · FREE

Mental Math Blitz

80 arithmetic problems in 8 minutes — the speed-test format many trading firms use to screen candidates. Plus survival and perfect-streak modes. Track your speed curve over time.

SPEED DRILL

Brain Teasers SRS

200 original problems on probability, expected value, combinatorics and game theory, each with a full worked solution. Spaced repetition drills your weak spots — not the ones you already know.

SPACED REPETITION

Probability & Kelly

Dice markets, conditional probability, expected value, Kelly criterion — the probability topics that come up in later interview rounds. Practice bet sizing under uncertainty until it's instinct, not calculation.

PROBABILITY

Performance Analytics

Track accuracy, P&L, speed, and streaks across every game. A readiness score shows how your skills are progressing across the board.

ANALYTICS

Daily Challenges

A new challenge every day. Streaks and XP keep you consistent between interview rounds.

GAMIFICATION

30 GAMES

Every interview format covered.

From card-deck market making to Greeks quizzes and the Kelly criterion — the formats quant and trading interviews test. Free games are free to play; every Pro game includes a free preview round.

🃏

The Deck

FREE

⚡

Mental Math Blitz

FREE

🧠

Brain Teasers

FREE

🔢

Sequences

FREE

🎲

Dice Market

PRO

🌐

Make Me A Market

PRO

Probability Betting

PRO

📡

Information Flow

PRO

🍎

Fruit Market

PRO

📊

ETF Arbitrage

PRO

⚽

Sports Betting

PRO

Greeks Quiz

PRO

♠

Poker Odds

PRO

🔀

Cond. Probability

PRO

🔁

Martingale Quiz

PRO

🔥

Combo Drill

PRO

📉

Vol Estimator

PRO

🔨

Auction Arena

PRO

🚶

Random Walk Duel

PRO

🏭

EV Factory

PRO

📶

Bayes: Signal Update

PRO

🛡️

Delta Hedger

PRO

↔️

Spread Trader

PRO

⏱️

Poisson Process

PRO

🎯

Arb Hunter

PRO

🧮

Speed Combinator

PRO

📈

Black-Scholes Intuition

PRO

🏦

Bond Desk

PRO

📐

Stat Inference

PRO

∫

Ito's Lemma

PRO

PRICING

Start free. Upgrade when you're ready.

One Pro plan, four ways to pay. Every plan unlocks the same thing: all 30 games, unlimited.

FREE

no account needed

Mental Math Blitz & Sequences — unlimited
The Deck & Brain Teasers — 5 sessions/day
1 free preview round of every Pro game
Daily challenges & streaks
Analytics for the last 7 days

Download Free

No account required

7-DAY FREE TRIAL

PRO

^$7.99

per month · 7-day free trial

All 30 games
Unlimited sessions
Full analytics history
Or $14.99 every 3 months
Or $59.99/year Save 37%

Start 7-day free trial

Free trial on the monthly plan for eligible new subscribers. Auto-renews until cancelled; cancel anytime in your Apple ID settings at least 24 hours before renewal.

LIFETIME

^$199.99

one-time purchase

Everything in Pro, forever
No subscription, no renewals
Restore on a new iPhone with the same Apple ID

Get Lifetime

Worth it on day 1 if you land the job

Prices in USD; local prices may vary by country. Payment is charged to your Apple ID. See Terms of Use.

QuantRival vs. Alternatives

QuantRival Pro

Coding prep sites

Prep books

Mock Interviews

Market making practice

✓

✗

Timed mental math tests

✓

✗

Brain teasers (SRS)

✓

✗

✓

✗

Mobile app

✓

✗

FAQ

Questions answered.

What makes QuantRival different from other interview prep apps? +

QuantRival is built specifically for quant trading interviews — not software engineering, not generic consulting. Every game trains a format that shows up in trading interviews: market making, timed mental math, probability and brain teasers. The 200 brain teasers are original problems with full worked solutions.

Which interviews does QuantRival help me prep for? +

Quant trader, quant researcher and trading internship interviews at prop trading firms, market makers, hedge funds and banks. QuantRival is an independent app and is not affiliated with any firm.

Is the free tier actually useful? +

Yes. The Deck, Mental Math Blitz, Brain Teasers, and Sequences are free. Mental Math Blitz and Sequences are unlimited; The Deck and Brain Teasers include 5 sessions a day. Every Pro game also has a free preview round.

How long should I prep with QuantRival? +

It depends on where you start, but short daily sessions over 2–4 weeks beat cramming. Mental math in particular improves with repeated speed drills.

Does QuantRival work for non-native English speakers? +

The math and market making games are entirely language-independent. Brain teasers are in English, but the explanations are clear and thorough.

Can I use QuantRival offline? +

Yes. QuantRival doesn't need an internet connection to practice: all games and brain teasers work offline, and your progress is stored on your device.

How does QuantRival compare to just reading an interview prep book? +

Prep books are great for theory and concepts. QuantRival is the practice layer — it gives you the reps. Think of it like reading about tennis vs. actually hitting serves.

I have an interview in 2 weeks. Is that enough time? +

Yes. 2 weeks of focused daily practice (20-30 min) is the sweet spot. Focus on The Deck and Mental Math Blitz first — they cover the market-making and mental-math rounds many trading interviews start with. Then rotate in brain teasers and probability games.

Do I need to create an account? +

No. Download and start immediately. No sign-up, no email, no friction. Your progress is saved locally on your device.

Train for Your Trading Interview