Circa: Natural Rhythm

From dusk till dawn

Only for iPhone

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

iPhone

The biological alarm clock that respects your sleep. Sunrise simulator and soundscapes with no subscriptions. Discover CIRCA, the biological alarm clock designed to respect your natural rhythm. Unlike standard alarms that shock you awake, CIRCA transforms your nightstand into a beautiful dawn and dusk simulator. KEY FEATURES: • Natural Sleep Onset: A deep red light mimics dusk to promote melatonin secretion. • Gentle Wake-Up: 30 minutes before your alarm, the screen simulates a sunrise, shifting from red to warm orange, then bright white. • High-Fidelity Soundscapes: Fall asleep to the sound of gentle rain, a crackling wood fire, or ocean waves. • OLED Safe Technology: Our "Liquid Dark" engine physically turns off black pixels. Minimal battery drain, total darkness. • One-Time Purchase (Premium): No hidden subscriptions. Unlock the full sensory experience once, for life. Respect your cycles. Wake up with CIRCA. Handcrafted with passion by KYMEA Studio.

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Discover CIRCA's biggest update yet! • New collection of High-Fidelity soundscapes (Ocean, Wood Fire, Forest...). • New onboarding experience to set up your night ritual. • Introducing CIRCA Premium: Unlock the full sensory experience with a one-time payment. No subscriptions. (A huge thank you to our early adopters: if you already had the app, the Premium version is yours for free, forever!)

Version 2.0

The developer, JULIEN DLUBALA, 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 Not Collected

    The developer does not collect any data from this app.

    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
    JULIEN DLUBALA
    Size
    57.9 MB
    Category
    Health & Fitness
    Compatibility
    Requires iOS 17.6 or later.
    • iPhone
      Requires iOS 17.6 or later.
    • Mac
      Requires macOS 14.6 or later and a Mac with Apple M1 chip or later.
    Languages
    English and 2 more
    • English, French, Spanish
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 Julien DLUBALA
  • Developer Website
  • Privacy Policy

    • More by JULIEN DLUBALA

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