Two new quizzes to help you understand AI, with 304 questions in total: • LLM Fundamentals: 144 questions on language models, tokenization, training, fine-tuning, evaluation and reasoning. • Practical Deep Learning: 160 questions on building models, neural networks, computer vision, data ethics and diffusion. • Learn from wrong answers with clear explanations and links to the supporting course lessons and notebooks. • Add either quiz to your unlock rotation, or practice with Lifetime Access. Questions and explanations are available offline. Opening source material requires an internet connection.

More variety in every unlock: • Selected quizzes now take turns in a shuffled order, so each gets a turn before repeating. • When you require multiple correct answers, each question can use a different selected quiz. • Your progress and current quiz are preserved when you close and reopen LockFeed. • New users start with one question per unlock. Your existing settings stay unchanged.

New ways to learn, with more room to focus: • Time Complexity: read short Python functions and identify their Big O. Includes 24 original exercises and clear explanations. • A cleaner code reader: long lines wrap to fit your screen, and a compact answer picker keeps the code in view. • Dark mode: choose Classic or a neutral black-and-white style, with matching lock screens and clearer controls. • Manage Apps to Lock: add or remove apps and set their individual unlock times in one place. • Clearer Settings: find your unlock time, required answers and selected quizzes together, with improved layouts for larger text.

- Added more logging

More control over your screen time: • Set a different unlock time for each app, or let it follow your default. • Choose 1–10 correct answers before an app unlocks, with progress saved if you leave and return. • Find your selected quizzes, analytics, and ad-measurement choices more easily in Settings. • Share suggestions or report a problem from the new Feedback tab.

Added an optional ad-measurement choice with clear privacy controls. You can manage it anytime in Settings.

- 2 more quizzes - multiple quiz selection

Fixed a crash.

A new gift-style reveal for Lifetime Access offers, with your offer remembered for next time. Optional analytics helps us improve LockFeed. Choose whether to share it, and change your choice in Settings. Existing Lifetime Access purchases continue to work.

Introducing Lifetime Access: a one-time purchase for unlimited app unlocks and quiz practice. Try five successful quiz-based app unlocks before purchasing. Standalone practice requires Lifetime Access. Restore Purchases is available for previous buyers.

- New Onboarding Flow!

LockQuiz is now LockFeed. • Explore the full library of 14 learning activities, including chess, vocabulary, art history, world flags, guitar notes, citizenship, and exam practice. • Choose one quiz for your protected apps and customize how long each unlock lasts. • Practice independently and keep track of your progress on your device. • A refreshed LockFeed design, with direct access to Settings and Quizzes and no onboarding.