Stimly: Caffeine Tracker

Coffee, Energy & Sleep Log

Only for iPhone

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

iPhone

See your caffeine in real time — when it peaks, when it fades, and when your body is ready for sleep. Personalized to your metabolism. Coffee works differently for everyone. Stimly shows you how it works for YOU. Most caffeine apps just count milligrams. Stimly models how caffeine actually moves through your body — using a science-backed metabolism engine calibrated to your age, weight, sensitivity and habits across 8 metabolic profiles. YOUR DAY AT A GLANCE • Live caffeine level — a real-time curve of what's active in your system now • Drinking now — log slow sips (yerba mate, big lattes) and watch absorption live • Sleep forecast — see when your body will be ready for quality sleep • Smart advice — gentle nudges when one more espresso would cost you tonight TRACK WITHOUT FRICTION • One-tap logging from your personal drinks library • Barcode scanner for bottled drinks • Daily limit with a clear budget bar (includes a dedicated pregnancy mode) • Symptom journal — connect how you feel to what you drank • 7-day history of everything you've logged STIMLY PRO — OPTIONAL PAID SUBSCRIPTION Everything above is free. These extras require a Stimly Pro subscription: • Tolerance tracking — see habituation build and fade week to week • Expert mode — brew method and dry mass for precision logging • Extended history — month and all-time views • 30-day wellness export — a clean PDF of your patterns SUBSCRIPTION DETAILS Stimly Pro is an auto-renewing subscription, available monthly or annually. Your local price is shown in the app before you buy. Payment is charged to your Apple Account at confirmation. It renews automatically unless cancelled at least 24 hours before the end of the current period — manage or cancel any time in your Apple Account settings. PRIVATE BY DESIGN Your data stays yours. No ads, no tracking across apps, no data selling. Stimly is a wellness tool for healthy adults. It is not a medical device and does not provide medical advice — for health concerns, talk to your doctor. Terms: https://stimly.app/terms · Privacy: https://stimly.app/privacy

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Bug fixes, improved typography, chain café presets, and telemetry for a better app experience.

Version 1.0.1

The developer, Mateusz Stys, 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:

    • Health & Fitness
    • Purchases
    • Contact Info
    • Identifiers
    • Sensitive Info

  • Data Not Linked to You

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

    • Usage Data
    • Diagnostics

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
  • Mateusz Stys
Size
  • 60.6 MB
Category
  • Health & Fitness
Compatibility
Requires iOS 15.1 or later.
  • iPhone
    Requires iOS 15.1 or later.
  • iPod touch
    Requires iOS 15.1 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English
Age Rating
9+
In-App Purchases
Yes
  • Stimly Pro Yearly $39.99
  • Stimly Pro Monthly $4.99
  • Learn More
Copyright
  • © 2026 Zen Media
  • Developer Website
  • Privacy Policy