LastSip

What it does

LastSip is a caffeine cutoff calculator that tells you when to stop drinking coffee, tea, or energy drinks based on your sleep time, metabolism, and sensitivity so you can fall asleep faster and wake up refreshed.

LastSip is a free caffeine cutoff calculator that helps you find your latest safe time to drink coffee, tea, or energy drinks based on your bedtime, metabolism, and sensitivity.

Find your perfect caffeine cutoff for better sleep, every night. Cutoff Mode tells you if it’s still safe to have caffeine now, or if your ideal cutoff time has already passed. Planning Mode lets you schedule drinks and see if your full day's plan fits before bedtime. Tap Caffeine Chart to see your full curve. Tap the icon to reset the main form. After you tap Start, you’ll see a quick personalization screen to improve accuracy. You can always revisit this guide or change your preferences later in Settings. Lowers your bedtime caffeine limit to 35mg for deeper, more protective sleep. Great if you're sensitive or optimizing recovery. Set your own bedtime limit. Most people sleep best with…from lastsip.app

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