Alyx: Caffeine Kit

Product Introduction

1. Alyx: Caffeine Kit is a mobile application designed to track caffeine consumption and analyze its physiological effects on users. It provides tools to log beverages like espresso or lattes, visualize caffeine metabolism timelines, and correlate intake with sleep patterns. The app calculates personalized metrics such as caffeine clearance times and bedtime caffeine levels to help users make informed decisions.
2. The core value lies in transforming caffeine tracking into actionable health insights through predictive analytics and behavioral feedback. It empowers users to optimize consumption habits by quantifying how caffeine impacts sleep quality, energy levels, and daily routines. The app combines practical logging features with scientific modeling to bridge casual tracking and health-conscious decision-making.

Main Features

1. The app predicts when caffeine will fully metabolize from the user’s system using half-life calculations based on logged intake and physiological factors. This feature displays a countdown timer and graphical timeline showing caffeine decline over 12 hours.
2. Users receive a daily "Last Call" recommendation indicating the latest safe time to consume caffeine without disrupting sleep, which can be paired with automated alarms. This adapts to individual sleep schedules and historical data trends.
3. Sleep impact analysis correlates caffeine intake timestamps with sleep duration/quality metrics imported from Apple Health or manually logged. The app generates weekly reports showing consumption patterns against sleep metrics.
4. Customizable widgets and Siri Shortcuts enable one-tap logging of common beverages like espresso (80mg) or latte (120mg) without opening the app. Preconfigured shortcuts support third-party automation tools.
5. A "Hall of Fame" ranks users based on lifetime caffeine logs, streaks, or adherence to personalized goals, adding gamification elements to habit tracking.

Problems Solved

1. The app addresses the lack of personalized, data-driven tools to quantify how caffeine intake timing and dosage directly affect sleep quality and daytime alertness. Traditional trackers focus only on quantity, not metabolic outcomes.
2. It serves frequent caffeine consumers, health enthusiasts, and individuals struggling with sleep disruptions who need to identify causal relationships between intake and physiological effects.
3. Typical use cases include office workers optimizing afternoon coffee cuts-offs, students managing exam-period caffeine spikes, or athletes aligning pre-workout consumption with recovery cycles.

Unique Advantages

1. Unlike generic health trackers, Alyx uses pharmacokinetic modeling to predict caffeine blood concentration levels rather than just tracking intake. This provides clinically relevant metrics like estimated bedtime plasma caffeine levels.
2. The "Last Call" algorithm dynamically adjusts recommendations by analyzing 14-day rolling averages of intake times, sleep data, and user-reported sensitivity levels. Competitors rely on static cutoff times.
3. Competitive differentiation includes full iOS ecosystem integration (30+ widgets, Apple Health syncing, Vision Pro compatibility) and privacy-first design with zero user data collection or cloud storage.

Frequently Asked Questions (FAQ)

1. How do subscriptions work? Subscriptions auto-renew annually or monthly through iTunes, requiring cancellation at least 24 hours before renewal. Users manage payments via Apple ID settings, not within the app.
2. What data does Alyx collect? The app does not collect or transmit any personal data, with all caffeine logs and health metrics stored exclusively on the device. Privacy policies confirm no third-party data sharing.
3. Which devices are supported? The app requires iOS 26.0 or later, optimized for iPhone with widget support. It does not currently offer iPad-native or Android versions.
4. How accurate are caffeine metabolism predictions? Calculations use peer-reviewed models accounting for body weight, age, and genetic sensitivity factors input by users, with ±15% accuracy compared to lab blood tests.
5. What is the "Hall of Fame"? A lighthearted leaderboard showcasing lifetime caffeine logs and achievements, designed to encourage consistent tracking without medical endorsement of high intake levels.