Brewlytics
Brewlytics is a caffeine tracker for iPhone. It helps users log coffee, tea, matcha, yerba mate, energy drinks, and custom drinks; track total caffeine today; estimate active caffeine with half-life modeling; understand bedtime caffeine impact; use iOS widgets; and review weekly caffeine patterns.
Core features include fast drink logging, daily caffeine limit, remaining caffeine budget, drink timeline, active caffeine estimate, decay chart, weekly insights, consumption heatmap, home screen widgets, and optional Pro features for deeper caffeine and coffee bean tracking.
Brewlytics stores caffeine logs and settings locally on the user's iPhone. No account is required. Payments are handled through Apple's App Store.
Download Brewlytics on the App Store