Q-Day

Your quantum HQ

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

Q-Day estimate, quantum radar, knowledge base, timeline, and local preparation plan. QDay is your quantum HQ: Q-Day estimate, ecosystem radar, knowledge base, timeline, and local preparation plan. Q-Day refers to the period when sufficiently powerful quantum computers could threaten parts of public-key cryptography such as RSA or elliptic-curve cryptography. QDay presents this as a statistical estimate with a range and sources, not as a fixed prediction. Included features: - Q-Day tracker with estimate, range, and probabilities. - Scenarios: fast, base, and slow readings of the range. - iOS widget to follow the estimate from the Home Screen. - Local reminders, with no account and no data collection. - Quantum Radar: companies, technologies, zones, and signals to track. - Timeline: hardware, algorithms, standards, markets, and major announcements. - Base: short cards explaining RSA, ECC, Shor, PQC, ML-KEM, QKD, and quantum sensing. - Filterable glossary for essential terms. - HQ: briefing, standards, method, sources, limits, privacy, and support. - Local crypto inventory: archives, critical accounts, vendors, certificates, wallets, and secret lifetime. - Preparation: local score and action plan for long-lived secrets, cryptographic dependencies, and vendor questions. QDay does not require an account, does not collect personal data, and does not require another app.

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Added a local crypto inventory in Preparation: secrets, vendors, certificates, secret lifetime, local score, and summary sharing.

Version 1.0.3

The developer, Abyssal Group, 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 Not Collected

    The developer does not collect any data from this app.

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    Accessibility

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    Information

    Seller
    • Abyssal Group LLC
    Size
    • 1.5 MB
    Category
    • Education
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2026 Abyssal Group
  • Developer Website
  • Privacy Policy

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