Caffeine Half-Life Tracker
Everyone
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About this app
Ever wonder why you can't fall asleep even though you had your last coffee "hours ago"? Caffeine doesn't just disappear — it takes roughly 5 hours for your body to eliminate just half of it.
Caffeine Half-Life Tracker shows you exactly how much caffeine is still active in your system right now, and precisely when it will drop low enough for quality sleep.
How it works
Log your drinks as you go — coffee, tea, energy drinks, or anything custom. The app uses your body's caffeine half-life (approximately 5 hours) to calculate a real-time decay curve and tells you when you'll be in the clear.
Features
• One-tap logging for espresso, drip coffee, lattes, green tea, black tea, Red Bull, Monster, Diet Coke, and more
• Real-time mg counter with color-coded status (red → green as caffeine clears)
• Decay graph showing your caffeine curve over the next 12 hours
• Sleep-ready countdown — know exactly when it's safe to wind down
• Custom drink support — add any drink with your own mg amount
• Sleep reminder notification when your caffeine drops below your personal threshold
• Adjustable half-life (3–7h) to match your own metabolism
• Fully offline. No account. No ads. No tracking.
Who it's for
Coffee lovers who want to time their last cup smarter. People who struggle with sleep but haven't connected it to caffeine. Anyone who's ever had a 2 AM heart race and wondered why.
Stop guessing. Start sleeping.
Caffeine Half-Life Tracker shows you exactly how much caffeine is still active in your system right now, and precisely when it will drop low enough for quality sleep.
How it works
Log your drinks as you go — coffee, tea, energy drinks, or anything custom. The app uses your body's caffeine half-life (approximately 5 hours) to calculate a real-time decay curve and tells you when you'll be in the clear.
Features
• One-tap logging for espresso, drip coffee, lattes, green tea, black tea, Red Bull, Monster, Diet Coke, and more
• Real-time mg counter with color-coded status (red → green as caffeine clears)
• Decay graph showing your caffeine curve over the next 12 hours
• Sleep-ready countdown — know exactly when it's safe to wind down
• Custom drink support — add any drink with your own mg amount
• Sleep reminder notification when your caffeine drops below your personal threshold
• Adjustable half-life (3–7h) to match your own metabolism
• Fully offline. No account. No ads. No tracking.
Who it's for
Coffee lovers who want to time their last cup smarter. People who struggle with sleep but haven't connected it to caffeine. Anyone who's ever had a 2 AM heart race and wondered why.
Stop guessing. Start sleeping.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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What’s new
Welcome to Caffeine — your body's caffeine clock.
- Log coffee, tea & energy drinks in one tap
- See exactly how much caffeine is active right now
- Decay graph for the next 12 hours
- Sleep-ready countdown so you know when to wind down
- Custom drinks & adjustable half-life
No account. No ads. Fully offline.
- Log coffee, tea & energy drinks in one tap
- See exactly how much caffeine is active right now
- Decay graph for the next 12 hours
- Sleep-ready countdown so you know when to wind down
- Custom drinks & adjustable half-life
No account. No ads. Fully offline.
Everyone
Learn moreApp support
phone
Phone number
+639304699769
About the developer
Jamuel Galicia
jammmg26@gmail.com
General Kangleon St
Toril, Davao City
8000
Philippines