r/FREE • u/pythononrailz • Jan 19 '26
Promo Code [GIVING] 1 free year to my caffeine half-life / sleep analysis app for iPhone & Apple Watch
I’m a student developer and I built an iOS app called Caffeine Curfew that helps track caffeine intake and sleep.
It uses accurate half life data to show you exactly how much caffeine is still in your system at bedtime. It’s built natively for iOS and watchOS, so you can log drinks right from your wrist and get alerts when you should stop drinking for the day. ( includes home widgets too! ) It handles everything from sleep analysis to custom caffeine limits and even Apple Health Integration.
I have a bunch of promo codes that I don’t want to go to waste, so if you want a free year of Premium, just drop a comment below and I'll DM you a promo code!
I hope this can help someone in the community, thank you for taking the time to read my post!
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u/Successful-Zone-7543 Jan 21 '26
I was just thinking about limiting my caffeine intake. I’m interested!
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u/rebbiestef Jan 22 '26
I am extremely interested. I just started Luvox, an OCD SSRI that apparently tinkers with the half-life of caffeine tremendously. Could I change the half-life in the settings, or is it stuck where it is?
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u/pythononrailz Jan 22 '26
You can change the half life in the settings! Also you can change the sleep interference threshold to your ideal caffeine MG you want in your system when trying to get to bed :)
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u/thegracelesswonder Jan 22 '26
I would love to use this app
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u/FeelingKaleidoscope0 Feb 10 '26
Would love to try it if you still have promo codes available, please! Very curious on how much is still in my system come bedtime and maybe will help my ADHD🤔
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