JumpRun for skydivers

JumpStack K.K.

About this app

JumpRun is a GPS instrument for the ride to altitude.

Set your exit point once. On the way up, JumpRun shows how far you are from it, how long the run in will take at your current ground speed, your height above the ground, your speed and your track - in figures large enough to read from a jump seat.

Download the map for your drop zone once on the ground, and the app then works with the doors closed and the phone in airplane mode.

WHAT IT SHOWS

- Distance to the point and estimated time en route at your current ground speed
- Height above the ground
- Ground speed and track over the ground, in true bearings
- Time since takeoff
- A moving map with your track line and a ring around the point

NO SETTING UP

- The pressure reference is recorded on the ground and fixed at takeoff. There is nothing to calibrate and no field elevation to enter.
- Takeoff and landing are detected on their own. Timers start and clear themselves.
- Nothing changes on its own in flight. Night mode is switched by hand, never by a clock or a sunset.

POINTS

- Add points by coordinates or from where you are standing
- Nudge a point on the map when the spot moves, and return it to where it was first registered at any time
- A ring of 0.1, 0.2 or 0.3 miles around each point, set per point
- Distances in miles, nautical miles or kilometres

FOR NIGHT AND FOR GLOVES

- Dark and red night modes, plus extra dimming for when the screen is still too bright at minimum brightness
- Large figures, large controls, no animation to chase

A NOTE ON ALTITUDE

Where your phone has a barometric pressure sensor, height above the ground is computed from it and shown as FT AGL - BARO. Many Android phones have no such sensor. On those, height comes from GPS instead and is shown as FT AGL - GPS, which is far less accurate. The app tells you which one it is using, and says so plainly the first time you open it on a phone without the sensor.

PRIVACY

JumpRun collects nothing. It contains no analytics, no advertising and no third-party SDKs. Your points and settings stay on the device. The app connects to the network only when you download a map, on the ground, because you asked it to.

TRY IT ON THE GROUND

Turn on the demo flight in Settings to see every instrument working against a simulated climb and jump run.

IMPORTANT

JumpRun is a recreational reference tool. It is not an aviation navigation instrument and has not been certified, tested or approved by any aviation authority. It is not a substitute for a certified altimeter, an audible altimeter or aircraft instruments, and it does not replace your own altitude awareness. Every decision about a jump remains yours and your pilot's, made under the rules of your drop zone and your national authority.

What’s new

First Android release.

Set your exit point on the ground, download the map once, and JumpRun shows distance to the point, time en route at your current ground speed, AGL, ground speed and track on the way up - offline, in airplane mode.

On phones without a barometer the altitude comes from GPS and the app says so.