SQM Mobile

Sky Quality & light pollution

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

Companion app for SQM Toolbox (macOS). Intended for hand-held SQM instruments, automatically synchronising field measurements with the desktop SQM Toolbox Bring your handheld Sky Quality Meter into the digital age. SQM Mobile is the perfect companion for field measurements, automatically syncing data to your Mac for storage, analysis and display. Key Features: Field-Ready Data Collection • Quick and easy measurement entry for handheld SQM devices • Automatic GPS location recording for each measurement • Timestamp for accurate astronomical correlation • Offline measurement storage - sync when connection available • Bubble level display for accurate zenith pointing Smart Location Features • Automatic GPS coordinate capture • Manual location override (to set background conditions) for local surveys • Perfect for camping trips, dark-sky site surveys, and travel observations Automatic Cloud Sync • Seamlessly sync measurements to SQM Toolbox on Mac via iCloud • Private, secure data storage - only you can access your measurements • Works anywhere with internet - no complex setup required • Real-time updates across all your devices Quick Analysis • Instant Bortle classification for each measurement • Basic light pollution assessment on-device • Comparison to natural background light levels • Simple graphical display, with twilight conditions • Measurement validation and quality indicators • Simple, intuitive interface designed for field use Astronomical Context • Automatic twilight condition detection • Moon phase information for each measurement • Sun elevation calculations Simple and Reliable • Designed for easy use in dark conditions • Large, clear buttons for nighttime operation • No account setup - uses your existing iCloud account Perfect for: • Citizen scientists or astronomers conducting site surveys • Researchers measuring light pollution • Dark-sky advocates documenting conditions • Anyone using a handheld SQM device who wants useful data analysis Requires: iOS 17.0 or later, iCloud account Works with: Any handheld Sky Quality Meter (SQM-L, SQM) Companion to: SQM Toolbox for macOS (available separately)

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

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    Information

    Seller
    • GerSpatial
    Size
    • 42.5 MB
    Category
    • Utilities
    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.
    • Apple Vision
      Requires visionOS 1.3 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2025-2026 GerSpatial
  • Privacy Policy