Unbuzz: Caffeine & Sleep Timer

Know when you're sleep-ready

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

Caffeine has a 5-hour half-life. A coffee at 3pm is still in your bloodstream at midnight. Unbuzz tracks it in real time and tells you when you're sleep-ready. Caffeine has a 5-hour half-life. A coffee at 3 pm is still circulating in your bloodstream at midnight, and that's why you can't sleep. Unbuzz tracks every drink, models your personal caffeine decay, and tells you the exact moment you're sleep-ready. SLEEP-READY ALERTS • Real-time caffeine curve based on your personal half-life • A gentle notification when your level drops below your bedtime threshold • Customisable bedtime goal, drink portion sizes, and sensitivity factors SMART TRACKING • Quick-tap logging for your favourite drinks • Barcode scanner for canned and bottled drinks • Apple Health integration (read & write) • Offline-first: every measurement stays on your device by default INSIGHTS • Daily and weekly caffeine breakdown • Streaks and achievements that reinforce mindful habits • Trends you can finally tie back to how you slept UNBUZZ PRO • Apple Watch app + complications, log a drink from your wrist • Home Screen and Lock Screen widgets that show your live caffeine level • Siri Shortcuts for voice logging ("Hey Siri, I just had a coffee") • Sleep-correlation analytics (how each day's caffeine maps to your night) • Weekly and monthly trend reports • Guided tolerance-reset programs (one of the most common asks) • Cloud backup and sync across your devices • Available monthly, yearly, or as a one-time Lifetime purchase PRIVACY • Works fully offline by default • Optional cloud sync uses end-to-end encryption • No third-party tracking, no ads, no data sales Built by Health3 AG. Questions, ideas, bug reports: hello@unbuzz.app or unbuzz.app. Terms of Use: https://unbuzz.app/terms.html Privacy Policy: https://unbuzz.app/privacy.html

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New in 1.1.0 • Personalized caffeine half-life: a short questionnaire calibrates your sleep-ready timing from how your body actually clears caffeine (smoking, hormonal factors, sensitivity), instead of a one-size-fits-all average. • A finer half-life dial: fine-tune your personal value in 0.1-hour steps, replacing the old three-bucket setting. • In-app What's New, so you never miss an update. • A smoother, faster onboarding tour. Questions or ideas? support@unbuzz.app

Version 1.1.0

The developer, Health3 AG, 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:

    • Contact Info
    • Identifiers

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Usage Data

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

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Health3 AG
Size
  • 130.2 MB
Category
  • Health & Fitness
Compatibility
Requires iOS 13.0 or later.
  • iPhone
    Requires iOS 13.0 or later.
  • iPod touch
    Requires iOS 13.0 or later.
  • Mac
    Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
  • Apple Watch
    Requires watchOS 9.0 or later.
Languages
  • English
Age Rating
9+
In-App Purchases
Yes
  • Unbuzz Pro (Lifetime) $49.99
  • Unbuzz Pro (Annual) $19.99
  • Unbuzz Pro $2.99
  • Learn More
Copyright
  • © 2026 Health3 AG
  • Developer Website
  • Privacy Policy
  • License Agreement

    • More by Health3 AG

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