CaffIQ: Caffeine Tracker

See exactly how today's coffee affects tonight's sleep. Personalised to your body, with real-time tracking and smart bedtime recommendations. Free trial.

Stop wondering why you're knackered every morning.

Your afternoon cuppa is still in your bloodstream at midnight — even when you don't feel it. CaffIQ is the first caffeine tracker that shows you exactly how today's coffee, tea, and energy drinks will affect tonight's sleep, personalised to your body.

Built on real pharmacokinetic science. Designed for your real life.

WHY CAFFIQ IS DIFFERENT

→ Personalised to YOUR body Most caffeine apps use one-size-fits-all averages. CaffIQ adapts to your weight, age, and sensitivity for accurate predictions that actually reflect how caffeine works in your system.

→ Predict tonight's sleep, today Get a real-time sleep readiness score that tells you exactly when to stop drinking caffeine to protect tonight's rest. No guesswork. No staring at the ceiling at 2 AM.

→ Track in real time, everywhere Live Activities show your current caffeine level on your Dynamic Island and Lock Screen. Glance at widgets on your Home Screen. Ask Siri "When can I sleep?" — get an instant answer.

KEY FEATURES

• Real-time caffeine concentration modelling
• Personalised half-life calculation based on your profile
• Smart bedtime recommendations
• Live Activities (Dynamic Island + Lock Screen)
• Home Screen widgets in 3 sizes
• Lock Screen widgets
• 4 Siri Shortcuts for hands-free logging
• Quick-add for tea, coffee, energy drinks, soft drinks, and more
• Comprehensive beverage database — yes, including a proper cup of tea
• Daily, weekly, and monthly insights
• Streak tracking and milestone achievements
• Apple Health integration (caffeine + sleep)
• Beautifully minimal design
• 5.5 MB — barely takes up any space

SCIENCE-BACKED, NOT HYPE

CaffIQ's recommendations are grounded in peer-reviewed sleep research:

• 400mg of caffeine 6 hours before bed still reduces sleep by over an hour (Drake et al., 2013)
• Caffeine cuts deep sleep by an average of 11 minutes (Gardiner et al., 2023 meta-analysis)
• Half-life varies between 2 and 10 hours from person to person (Stanford research)

We translate the science into clear, actionable insights — no PhD required.

WHO CAFFIQ IS FOR

→ Tea drinkers who didn't realise their afternoon brew was the problem → Coffee lovers who don't want to give up coffee — just understand it → Anyone optimising their sleep who's tried everything except the obvious → Quantified-self types who already track everything else → Shift workers, NHS staff, and night owls navigating odd hours → Anyone who's ever lain awake at 1 AM wondering "was it that flat white?"

SUBSCRIPTIONS & PRICING

CaffIQ is free to download with core tracking included.

Unlock the full experience with CaffIQ Pro:

• 7-day free trial
• Annual: best value
• Monthly: flexible
• Lifetime: pay once, use forever

Subscriptions auto-renew unless cancelled at least 24 hours before the renewal date. Manage in your Apple ID settings. Cancel anytime.

PRIVACY-FIRST DESIGN

Your data stays on your device. CaffIQ does not track you across apps or websites. We don't sell, share, or rent your information. Ever. Fully GDPR-compliant.

Privacy policy: caffiq.org/privacy Terms of use: caffiq.org/terms

JOIN THE EARLY USERS SHAPING CAFFIQ

CaffIQ is built by an indie developer who wanted to understand his own caffeine. Got feedback, ideas, or just fancy a chat? hello@caffiq.io

Track smarter. Sleep better. Welcome to CaffIQ.