StackTrack-CRW

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Free · Designed for iPad. Not verified for macOS.

StackTrack takes the guesswork out of spotting for CRW jumps. Enter your drop zone, exit altitude, and canopy performance numbers, and StackTrack calculates your optimal exit point using real-time winds aloft data - so your canopy arrives at the target, not half a mile downwind. How it works StackTrack fetches a live upper-air wind profile for your drop zone from Open-Meteo and runs a simulation from exit altitude down to breakoff. It accounts for wind speed and direction at every 1,000 feet, your canopy's forward speed, and your descent rate to place the exit point exactly where it needs to be. Features • Real-time winds aloft - automatically fetched for any location worldwide • Interactive satellite map with flight path, jump run line, exit point, and altitude markers every 2,000 ft • Lateral and along-track offset sliders to fine-tune the exit relative to the jump run • Winds aloft table showing direction, speed, and temperature at each altitude • Forecast mode - step forward or backward in 1-hour increments to plan ahead • Supports imperial and metric units, multiple speed units (mph, knots, km/h, m/s) • Weather screen with full forecast for your drop zone • Draw generator for 2-way and 4-way sequential

  • 5.0
    out of 5
    2 Ratings

Wind Data & Accuracy - Fixed a bug where the spotting calculator was fetching wind data for the wrong hour on non-UTC devices (could be up to 7 hours off) - Wind profile altitudes now correctly shown as AGL (Above Ground Level) on both the weather and spotting pages, matching what skydivers read on their altimeters - Improved near-surface wind accuracy by including additional atmospheric measurement levels (80m, 120m, 180m), bringing the spotting and weather pages into agreement through the lower altitudes Weather Page - Winds aloft table now shows highest altitude at the top and ground level at the bottom UI - App version number now displayed subtly at the bottom of the home screen

The developer, Peter Fetros, 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

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    • Peter Fetros
    Size
    • 72.6 MB
    Category
    • Navigation
    Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPad
      Requires iPadOS 15.1 or later.
    • iPod touch
      Requires iOS 15.1 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2025 Peter Fetros