
Caffeine Tracker: Sundown
Your last coffee before bed
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About
Coffee is fine. Coffee at the wrong hour isn't.
Sundown works out the last moment you can still have your usual drink and sleep — then shows you what happens if you have one anyway.
AN ANSWER, NOT A NUMBER
Every other tracker opens on a total. Sundown opens on a sentence: "Last drip coffee by 2:10 PM." The screen is a sky, and the sun sitting on the curve is the caffeine in you right now. The lower it hangs, the closer the day is to done.
SEE IT BEFORE YOU DRINK IT
Pick a drink, drag the time, and watch tonight change in front of you. A cold brew at 4pm and a cold brew at 6pm are not the same night, and now you can tell which is which.
YOUR BODY, NOT AN AVERAGE
People clear caffeine at wildly different speeds — the same cup can wear off in three hours or hang around for ten. Smoking roughly halves it. Hormonal contraceptives roughly double it. Set yours in three taps, or by hand.
REAL PHARMACOKINETICS
Caffeine peaks about an hour after you drink it, not the instant you log it. Sundown models absorption and elimination properly, including the slow-release kind in pre-workout.
EVERYTHING THAT HAS CAFFEINE IN IT
Drip, pour over, French press, AeroPress, Moka pot, K-Cup, instant, cold brew, nitro, espresso drinks. Black, green, white and oolong tea, matcha, yerba mate, chai. Energy drinks and soda. Plus the caffeine in dark chocolate, in painkillers, and in caffeine pills and gum. Make your own for anything missing.
COME DOWN WITHOUT THE HEADACHE
Cutting caffeine fast is what causes the headache. Taper plans step you down week by week and never take more than a quarter at a time.
ON YOUR PHONE, NOT OURS
No account. No sign-in. Your log never leaves the device. Apple Health sync works in both directions.
Widgets on the Home and Lock Screen, a reminder 20 minutes before your cutoff, and one-tap logging from Siri and Shortcuts.
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Sundown Pro
Try everything free for 3 days. After that Pro continues as a monthly or yearly subscription, or a one-time lifetime purchase — your choice, shown in your own currency before you buy.
Subscriptions renew automatically unless cancelled at least 24 hours before the period ends. Manage or cancel in Settings on your Apple Account. Deleting the app does not cancel a subscription.
Privacy Policy: https://247pro.github.io/sundown-legal/privacy.html
Terms of Use: https://247pro.github.io/sundown-legal/terms.html
Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Sundown gives you information, not medical advice. Caffeine content varies by preparation, so every figure is an estimate.
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What's New in Caffeine Tracker
1.0
August 19, 2026
Subscription plans
Sundown Pro Monthly
Full history, taper plans and unlimited custom drinks.
$3.991 Month
3 Days trial1
In-App Purchases
$34.99
Sundown Pro Lifetime
Pay once. Full history, taper plans, unlimited drinks.




