Support

We usually reply within 48 hours.

Need a hand? Email contact@lastcup.app and tell us your iPhone model and iOS version — it helps us help you faster.

Getting started

On first launch, Last Cup asks a few questions — your weight, sleep schedule, chronotype and caffeine sensitivity — so it can model how caffeine behaves in your body. You can change any answer later in Settings.

Logging a drink

Tap the + button, pick a drink, and you're done. If you drank it earlier, use the time pills (15 m, 30 m, 1 h, 2 h ago) before choosing. You can also create custom drinks with your own caffeine amount.

The caffeine ring & "Sleep tonight"

The ring shows how much caffeine is active in your body right now, decaying in real time. The Cutoff card tells you the latest you can drink without hurting tonight's sleep, and Sleep tonight estimates the impact of what you've already had.

Calibration (your first 14 days)

Everyone metabolises caffeine differently. Over your first two weeks, Last Cup learns your real half-life from your sleep feedback. You'll see a "Learning" badge until it's calibrated to you.

Managing your subscription

If you subscribe to a paid plan, you can manage or cancel it any time in iPhone Settings → your name → Subscriptions. Subscriptions are billed and managed by Apple.

Restoring a purchase

New device, or reinstalled the app? Open the app's paywall and tap Restore purchases to bring back an active subscription tied to your Apple ID.

Refunds

All purchases go through Apple, so refunds are handled by Apple at reportaproblem.apple.com.

Your data & privacy

Last Cup runs on your device — there's no account and your caffeine and sleep data never leave your iPhone. To remove everything, clear your history in the app or delete the app. See our Privacy Policy.

A note on health

Last Cup is a wellness tool, not a medical device, and does not provide medical advice. If you're pregnant, have a heart condition, or any concern about caffeine, please talk to a qualified professional. In the app, Methodology & references links the research behind our estimates.

Contact

Still stuck, or have an idea? We'd love to hear it — contact@lastcup.app.

Terms of Use (EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/