Hi Concepcion, I have the Axiom too and I can mirror Navionics to an Ipad/Iphone as you mention. But I don't believe you're able to control the helm that way. Can you check that for me as I may need an upgrade or something? I suspect not, as I'd always assumed this was a safety issue. In addition, they'd undermine the $400 odd gizmo Raymarine sells for this purpose...
So for me, Navionics at the helm, iSailor on the iPad - GPS model (predominately for an anchor watch, but good as a redundant backup), Open Cpn on the laptop with a puck for GPS positioning (early days with this, but another backup that has up to date Aus Hydro charts so I can compare to Navionics in areas I don't know), Aus winds app for realtime Automatic Weather Station feeds (I refer to this all the time, it's a useful tool to have down here), Windy app along with BOM site for general weather planning in 3g/4g range only.
Here's an interesting weather app overview by this cruiser who is a forecaster by trade: