ReAlign

Education

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

Re_Align is an iPhone assistant designed to guide astronomers and astrophotographers through the setup and alignment of an equatorial mount. Using geographic location, device orientation, and the camera, the app guides the user through the main mount preparation steps with clear instructions and progressive checks. MAIN FEATURES • Automatic calculation of the correct polar-axis elevation based on the latitude detected through GPS. • Step-by-step guidance for tripod levelling and initial mount adjustment. • Day mode for orienting the polar axis toward true north when Polaris is not visible. • Night mode for alignment toward the celestial pole. • Visual guidance for adjusting the mount’s azimuth and altitude axes. • Sky image capture and star-field recognition on compatible devices. • Assisted three-star alignment procedure. • Quality checks for magnetic interference, insufficient GPS accuracy, or unsuitable measurement conditions. • Interface optimised for outdoor use and nighttime astronomy sessions. DAY MODE Re_Align uses geographic location and the iPhone’s orientation sensors to indicate true north and the correct elevation of the polar axis. Because a smartphone compass may be affected by metal components, motors, and counterweights, the app always displays the estimated reliability of the measurement and advises the user to keep the device at an appropriate distance from the mount. POLAR ALIGNMENT MODE During nighttime observing sessions, Re_Align guides the user toward the celestial pole and displays the corrections required on the mount’s azimuth and altitude axes. THREE-STAR ALIGNMENT On supported devices and under suitable observing conditions, the app analyses an image of the sky and assists the user in selecting three stars distributed appropriately across the celestial sphere. The procedure can improve the mount’s pointing model when used with compatible hardware. IMPORTANT Re_Align is a setup assistance tool. On a manual mount, all adjustments must be physically performed by the user. Accuracy may vary depending on the iPhone model, GPS signal quality, magnetic interference, sky visibility, and correct installation of the mount. Re_Align does not replace the safety procedures or instructions provided by the mount manufacturer.

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Fixed Bug in Intervallometer Fixed minor bugs

Version 1.2.2

The developer, MATTEO PIRAS, 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.

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    Accessibility

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    Information

    Seller
    • MATTEO PIRAS
    Size
    • 1.8 MB
    Category
    • Education
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Location
    • This app may use your location even when it isn’t open, which can decrease device battery life.
    Languages
    • English and Italian
    Age Rating
    4+
    Copyright
    • © 2026 MP Software. All rights reserved.
  • Developer Website
  • Privacy Policy

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