Cupline
Watch it fade
Caffeine peaks about 45 minutes after a drink, then slowly falls. Cupline draws your whole day and marks when you are under your sleep line.
iPhone, Apple Watch
See the last time today one more cup still lets you sleep.
We built Cupline because the afternoon coffee is still with you at midnight. It draws the caffeine in you across the day and tells you the last time one more cup still lets you sleep.
App Store link coming soon
165 mg Caffeine in you now
See what one more cup would do
Pick a drink before you log it, and Cupline shows how much later you would be ready to sleep.
Learn what caffeine does to your nightsCupline Plus
After 14 nights, Cupline Plus compares nights over your sleep line with the rest, and names a difference only when the numbers support it.
Apple Watch
Log a favorite from your wrist
The caffeine in you and your sleep line at a glance. Turn the crown to change the amount.
Private by design
- No ads, no tracking, no sign-in.
- Our server keeps random IDs, never your drinks. Usage data and offers are opt-ins, off by default.
- Your drinks and nights stay on your iPhone and Apple Watch. We never receive them.
Free, with Cupline Plus when you want more
Everything you need to see your caffeine and your sleep line is free.
Cupline
Free
- Over 20 drinks built in, from espresso to matcha
- The curve, your sleep line and your last call
- What a drink would do before you log it
- Last-call reminder
- Morning sleep check-in
- 7 days of history
- Apple Watch app and complications
- Caffeine now and curve widgets, Lock Screen widgets, the Control Center control and Siri
Cupline Plus
14.99 USD a yearwith a one-week free trial, or 2.99 USD a month
- Your sleep pattern: caffeine at bedtime against how you slept
- Your own half-life, from 2 to 10 hours
- Your own drinks, with their real caffeine
- Full history with 30- and 90-day charts
- Export your log as CSV
- One-tap logging from a widget and from Control Center
Prices are in US dollars. The App Store shows the price for your country, which may differ. Payment is charged to your Apple ID. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the trial or the current period. Manage or cancel them in your App Store account settings.