nav apps on phones or tablets

[Scott]

I know this topic is more hot stove league stuff when lots of us have our boats on the hard, but I haven't seen an updated discussion for a while (if i missed this thread, pls let me know).

Since I always have my phone on board, and usually a PC and tablet, I am wondering if anyone has 

1. connected PC to instruments?

2. Using tablet as backup (or primary) for nav, and if so what app you are using.

Also, any nav apps on PC. I still use my free copy of chart navigator I got from the power squadron for plotting and planning at home. I don't have it connected to any instruments, i don't think it is supported anymore, but i like doing things on my pc with a mouse rather than the tablet. the tablet oth has gps built in.