Caffy: Caffeine Sleep Tracker

Coffee, Energy Drink & Intake

Only for iPhone

Free · In‑App Purchases

iPhone

Know exactly when your caffeine peaks, fades, and starts hurting your sleep. Science-backed tracking that helps you drink smarter and sleep better. Caffy shows your exact caffeine level right now, and tells you precisely when you'll be ready to sleep tonight. Using pharmacokinetic half-life models backed by FDA, EFSA & NIH research, Caffy calculates your personal caffeine curve based on your biology. WHAT MAKES CAFFY DIFFERENT: • Real-time caffeine decay curve — personalized to your age, gender & sensitivity • Sleep readiness score (0–100) — know if tonight's sleep is at risk before bedtime • Focus window — see exactly when your caffeine peaks for maximum productivity • AI Weekly Analysis — AI reveals your personal caffeine patterns • Caffeine Detox Programs — structured plans to reduce dependence gradually • 6 Live Widgets — caffeine data on your Home Screen and Lock Screen • 5 Languages — English, Turkish, German, Spanish, Japanese PERSONALIZED HALF-LIFE: Your body processes caffeine differently. Caffy accounts for: • Pregnancy (9h / 12h / 18h half-life) • Oral contraceptive use (7h half-life) • Smoking status (3h half-life) • Age, gender & caffeine sensitivity SCIENCE-BACKED: Caffy's model uses the same caffeine decay formula cited by FDA, EFSA, NIH, and the Sleep Foundation — not estimates, not averages. A 45-minute absorption phase followed by exponential decay based on your personal half-life. PRIVACY FIRST: No ads. No data selling. Anonymous by default — no registration required on first launch. Your data syncs across devices via an encrypted, GDPR-compliant database. DISCLAIMER: All estimates are based on generalized scientific models and do not constitute medical advice. Consult a healthcare professional for personalized guidance. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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This update makes Caffy clearer and more personal: • A redesigned Insights preview with real highlights from your own last 30 days • Bigger, easier-to-read text across the app • Your 30-Day Trend now explains what it means, with month names in your language • Free preview of the "What if I drink?" metabolism simulator • Share your Caffeine DNA as a polished image card • An optional reminder if you go a few days without logging • Lots of polish and fixes, including tidier notifications

Version 1.0.2

The developer, Irfan Behic TIRPANCI, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Purchases
    • Contact Info
    • Identifiers
    • Sensitive Info

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer indicated that this app supports the following accessibility features. Learn More

  • Supported Features

    • Dark Interface

    • Differentiate Without Color Alone

Information

Seller
  • Irfan Behic TIRPANCI
Size
  • 22.9 MB
Category
  • Health & Fitness
Compatibility
Requires iOS 18.6 or later.
  • iPhone
    Requires iOS 18.6 or later.
  • Apple Vision
    Requires visionOS 2.6 or later.
Age Rating
13+
  • 13+
  • Learn More
  • Infrequent
    Medical Treatment information

    Contains
    Health or Wellness Topics
In-App Purchases
Yes
  • Caffy Premium $29.99
  • Caffy Premium $6.99
  • Caffy Premium $2.99
  • Learn More
Copyright
  • © 2026 Irfan Behic
  • Developer Website
  • Privacy Policy

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