iSQMeter

Estimates sky's brightness

Only for iPhone

$8.99 · Designed for iPhone. Not verified for macOS.

iPhone

Measure the brightness of the night sky with your iPhone. iSQMeter provides quick SQM-style estimates for astronomy, stargazing and astrophotography. Measure the night sky with your iPhone. iSQMeter uses the iPhone camera to estimate sky brightness in magnitudes per square arcsecond (mag/arcsec²), the unit commonly associated with Sky Quality Meter readings. Designed for astrophotographers, amateur astronomers and stargazers, the app provides a quick way to assess observing conditions before or during a session. KEY FEATURES • Camera-based night-sky brightness measurements • Results expressed in mag/arcsec² • Clear and easy-to-read measurement interface • Useful for comparing observing sites and changing sky conditions • Designed for astronomy, astrophotography and light-pollution awareness Measurement quality may vary depending on the iPhone model, atmospheric conditions, nearby light sources, camera alignment and calibration. iSQMeter is not a certified scientific instrument and does not replace a dedicated photometer or professional Sky Quality Meter. Uncalibrated readings should be treated as estimates rather than absolute measurements.

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    Information

    Seller
    MATTEO PIRAS
    Size
    5.5 MB
    Category
    Education
    Compatibility
    Requires iOS 18.0 or later.
    • iPhone
      Requires iOS 18.0 or later.
    • Mac
      Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 Matteo Piras. All rights reserved.
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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