qdev blitz - c++ & python prep

quant developer interview prep

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Prep for quant developer interviews in a few minutes a day. qdev blitz turns the questions that come up in C++ and Python interviews at trading firms into short multiple-choice lessons. Read a snippet, then predict its output, find the bug, spot the race condition, or reason about complexity and cache behavior. Every answer comes with a short explanation of the idea behind it. TWO TRACKS • C++: core language, memory and object lifetime, templates, the STL, concurrency and memory ordering, operating systems, and low-latency performance. • Python: the data model, data structures and their costs, functions and OOP, the GIL and concurrency, CPython internals, NumPy and pandas, and operating systems. Study one or both, and switch between them any time. LEARN IN A WAY THAT STICKS • Lessons of 8–10 questions that ramp up in difficulty • Missed questions come back until you get them right, then return in spaced reviews • Take the placement test to start at your level, or jump ahead with a checkpoint • Streaks, a daily XP goal and an optional reminder keep you consistent BLITZ MODE Answer against the clock for bonus XP: 30 seconds for concept questions, 60 for code. PREMIUM The full path is free, limited by hearts. Premium adds unlimited hearts, blitz mode, a searchable question bank, jumping straight to any section without a checkpoint, and full stats: mastery by section, accuracy by question type and 30 days of XP. Start with a 7-day free trial. Premium is an auto-renewing monthly subscription. After the free trial, payment is charged to your Apple Account, and the subscription renews each month unless you cancel at least 24 hours before the end of the current period. Manage or cancel it in your App Store account settings. Privacy policy: https://lukazsdev.github.io/qdev-blitz-site/privacy/ Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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• Question bank (Premium): search every question by topic, difficulty and type, and practise any of them. • A faster start: pick a track and a goal, and you're on the path. The placement test is in Profile. • New app icon and a new look for titles.

Version 1.1

The developer, LUCAS LIZARDO OLIVERI, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Purchases
    • Identifiers
    • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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Information

Seller
LUCAS LIZARDO OLIVERI
Size
52.8 MB
Category
Education
Compatibility
Requires iOS 16.4 or later.
  • iPhone
    Requires iOS 16.4 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 lukazsdev
  • Privacy Policy