It would only appear on your own chart.

Shifu, no, you can't just convert one. By "all the data" I assume you mean its name and coordinate, which is really all the data user waypoints have. Airfields, on the other hand, contain lots of data.

Thanks Tim. Can you just confirm whether an airfield entered in the Data Creator would subsequently appear on the SkyDemon charts, or would it remain visible to the user only (like the user defined waypoints)? 

I believe we pick a "proper" airfield or heliport if one is reasonably close by, as that is usually the actual point of takeoff or landing rather than user waypoints, which tend to be used as markers rather than landing sites.

It might be worth your while investigating the Data Creator on a PC, where you can actually create your airfield as a proper airfield within the SkyDemon charts. You can then share that data with your mobile devices.

I have entered a private airstrip as a user waypoint, since I fly there quite frequently. Planning and navigation work fine both to and from this point.  However, looking at the the track logs afterwards, Skydemon substitutes the name of the nearest airfield (in fact a heliport - would be interesting an PA28!) instead of the name of the user defined airstrip.  This happens whether the user waypoint is the point of departure or the destination.   This only happens on the track logs, so it is quite a minor point.  However, it would be good to have the right name if that is possible.

Using Skydemon for iPad 3.6.2.44