GPF Bubble Level

Bubble Level

Only for iPhone

Free

iPhone

Turn your iPhone into a precise, minimalist bubble level with real-time tilt tracking, smooth motion, and a clean black-and-white design. GPF Bubble Level is a minimal, high-contrast spirit level app for iPhone, built around real-time accelerometer data. It uses Core Motion to read device gravity and translates movement into a smooth on-screen bubble inside a circular level grid. The interface is intentionally clean: black background, white elements, Menlo typography, and a compact layout designed for quick visual alignment in everyday use. Key features: - Real-time level detection using accelerometer/device motion - Smooth bubble movement with light filtering for stability - Tilt angle readout in degrees - Live X/Y gravity values for reference - Dedicated Info screen with app icon, title, and version/build footer - Custom monochrome app icon (white on black) consistent with the app style Design goals: - Fast glanceability - No clutter - Strong visual contrast for indoor/outdoor visibility - Coherent monochrome identity across UI and iconography Technical notes: - SwiftUI-based UI - CoreMotion integration via observable motion manager - Motion privacy usage description configured - Build/version shown directly from bundle metadata This app is ideal for quick leveling checks on surfaces, shelves, frames, and small DIY tasks, with a focused UX that prioritizes readability and responsiveness.

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The developer, Gian Paolo Fontani, 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

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    Accessibility

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    Information

    • Seller
      • Gian Paolo Fontani
    • Size
      • 338.9 KB
    • Category
      • Utilities
    • Compatibility
      Requires iOS 18.6 or later.
      • iPhone
        Requires iOS 18.6 or later.
    • Languages
      • English
    • Age Classification
      4+
    • Copyright
      • © Gian Paolo Fontani
  • Developer Website
  • Privacy Policy

    • More by Gian Paolo Fontani