Caffeine Curfew is a native iOS and WatchOS App that allows user to track the active half life decay of their caffeine intake. We support Apple Heath Integration, Homescreen Widgets, and we offer sleep analysis tools to help users get a better understanding of their productivity and rest. We take pride in listening to our users and iterating quickly.
Hey Product Hunters,
I built this app because I am a software engineering student and a complete mess when it comes to my caffeine intake. I needed a tool to easily visualize my caffeine half life levels on my wrist, but all the other Apple Watch companion apps were hidden behind a paywall. As someone who drinks coffee and consumes pre-workout daily, this tool has already helped me get a grip on my sleep and has led to more productive days. How many cups of coffee are you currently consuming in a day and do you think monitoring your caffeine intake can lead to a more productive and informed you?
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Link:
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@garrett_woodside Very cool Garret. Congrats on the launch. Have you built in notifications on sleep vs intake?
@zolani_matebese Yes! There are currently cut off notifications based on your bedtime, threshold, and half life speed! These are set in the sleep analysis tool area!
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Modeling caffeine half-life decay on Apple Watch + Apple Health integration is a super practical way to connect “what I drank” to “why I slept poorly.” The scale pain is accuracy (different drinks/servings) + adherence; best practice is quick-add presets + barcode/shortcut intake logging, and use HealthKit sleep signals to auto-tune a user’s half-life model over time. Any plans to ship an Android/Wear OS version? I’ll be looking for it.
@sylvia_weng99 yes! It’s customizable for your personal metabolism! Since caffeine affects everyone so differently.
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ohhhhh this one is such a good idea ahahah
Does it let you log custom caffeine sources (like specific teas or chocolates) with adjustable mg amounts? And how does the sleep analysis tie into the caffeine data – any cool visualizations for correlations?
@cathcorm yes! You can add custom pre sets for your favorite drinks and candies so you can easily log them from your watch / Home Screen! Our sleep analysis tool tells you how much MG you have left throughout different times during the night. ( say you want a coffee / candy at 5:30pm , how much caffeine will you have left in your system at midnight )
@kamil_maksymowicz our android os version is on the way as we speak! This version integrates with google health. We are also looking into making the app oura ring compatible as well.
Caffeine Curfew iOS App
@garrett_woodside Very cool Garret. Congrats on the launch. Have you built in notifications on sleep vs intake?
Caffeine Curfew iOS App
Modeling caffeine half-life decay on Apple Watch + Apple Health integration is a super practical way to connect “what I drank” to “why I slept poorly.” The scale pain is accuracy (different drinks/servings) + adherence; best practice is quick-add presets + barcode/shortcut intake logging, and use HealthKit sleep signals to auto-tune a user’s half-life model over time. Any plans to ship an Android/Wear OS version? I’ll be looking for it.
Caffeine Curfew iOS App
Love the half-life decay approach here — it’s way more useful than just logging “cups.”
Is the caffeine half-life a fixed value, or can it be personalized (weight/sleep sensitivity/metabolism)? Customization would be huge.
Caffeine Curfew iOS App
ohhhhh this one is such a good idea ahahah
Does it let you log custom caffeine sources (like specific teas or chocolates) with adjustable mg amounts? And how does the sleep analysis tie into the caffeine data – any cool visualizations for correlations?
Caffeine Curfew iOS App
Caffeine Curfew iOS App
@garrett_woodside ohhhhhhhh i love that! will definitely try!
Open Wearables
Do you integrate with rings and google health?
Caffeine Curfew iOS App
minimalist phone: reduce your screentime
Sent it to my friend who admires coffee :D
Caffeine Curfew iOS App
minimalist phone: reduce your screentime
@garrett_woodside You are welcome :)
interesting one for all coffee lovers :)
Caffeine Curfew iOS App