About
This app calculates the optimal exit point for CRW jumps using real-time winds aloft data. It provides an interactive map with flight paths and altitude markers, allowing users to fine-tune their jump run and plan ahead with forecast mode.
What's New in StackTrack
1.0.6
July 6, 2026
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
MoreFAQ
What is StackTrack-CRW?
StackTrack-CRW is a free navigation app designed to calculate the optimal exit point for CRW (Canopy Relative Work) jumps. It uses real-time winds aloft data and your canopy performance to ensure accurate arrival at the target.
How does StackTrack-CRW calculate the exit point?
It fetches live upper-air wind profiles from Open-Meteo and simulates the descent from exit altitude to breakoff. The app accounts for wind speed and direction at various altitudes, canopy forward speed, and descent rate.
Can StackTrack-CRW be used worldwide?
Yes, StackTrack-CRW automatically fetches real-time winds aloft data for any location worldwide, making it a versatile tool for skydivers globally.
Does StackTrack-CRW offer offline functionality?
The provided data does not specify offline functionality. Real-time wind data fetching suggests an active internet connection is likely required for its core features.
What units does StackTrack-CRW support?
StackTrack-CRW supports both imperial and metric units, as well as multiple speed units including mph, knots, km/h, and m/s, catering to a wide range of user preferences.
How often is StackTrack-CRW updated?
The app was last updated on June 17, 2026, indicating recent development. The latest version is 1.0.3.
Is StackTrack-CRW suitable for beginners?
While the app is rated for ages 4+, its specific focus on CRW jumps suggests it is primarily intended for experienced skydivers familiar with these maneuvers.
Does StackTrack-CRW have ads?
No, StackTrack-CRW is ad-free. The application does not contain advertisements, providing an uninterrupted user experience.