Nice app
Good aesthetic and price.
Looking forward to potential future Apple health integration!
Another app I used for this had an estimated projection of caffeine levels over time computed via the half-life

This app helps you track your caffeine intake and understand its impact on your sleep. It calculates your daily caffeine cutoff time and provides smart suggestions for low-caffeine alternatives based on your remaining caffeine room.
1.0.4
May 4, 2026
• Added Wake-up Time so Last Sip knows when your next caffeine day should begin • Added a new Sleep Window that keeps caffeine room closed between bedtime and wake-up time • Added Start My Day for early mornings when you are awake before your usual wake-up time • Improved caffeine room logic after bedtime so the app no longer shows “Room available” late at night • Updated onboarding to ask for both bedtime and wake-up time together • Added Wake-up Time to Settings for easy adjustments • Improved the Edit Log Time sheet on smaller iPhones • General polish and reliability improvements
MoreLast Sip is a caffeine tracker and cutoff calculator designed to help users manage their caffeine intake and understand its potential impact on sleep. It provides insights into caffeine levels throughout the day and before bedtime.
By tracking caffeine intake and calculating a personalized cutoff time based on your bedtime, Last Sip helps you avoid consuming caffeine too close to sleep. It estimates when your caffeine levels may dip below a sleep-ready threshold.
You can log a wide variety of caffeinated beverages and foods, including coffee, espresso, cold brew, tea, matcha, energy drinks, pre-workout supplements, and chocolate. It features a searchable library with popular brands and coffee shop drinks.
Yes, Last Sip provides smart suggestions based on your remaining caffeine room, bedtime, and chosen caffeine sensitivity. It helps you make practical choices about what caffeinated items still fit into your day.
Absolutely. Last Sip allows you to track your caffeine habits, monitor sleep-safe streaks, view weekly patterns, and analyze 30-day progress trends locally on your device.
Last Sip is a paid application, priced at $0.99. This one-time purchase grants you access to all its features for tracking caffeine and improving sleep hygiene.
No, Last Sip is ad-free. As a paid application, it provides an uninterrupted user experience without any advertisements.
Last Sip is currently available for iPhone. Future platform expansions may be considered based on user demand and development resources.