An instrument rated SR22 private pilot failed to note the heading after departure directed by the Van Nuys SID from BUR. A track deviation and a separation issue with a departure off another runway ensued. The reporter's recent change to an iPad based EFB utilizing NACO vice commercially provided aero charts was a contributing factor.

Narrative

I was cleared to depart Runway 15 from BUR via the Van Nuys Eight Departure. I incorrectly interpreted the published procedure to require a right turn direct to VNY upon takeoff. I was using an iPad for approach plates. At the time of the incident I had not been using the iPad very long for in-flight use so was relatively unfamiliar with the NACO plates as I had previously been using commercially prepared plates. I did not sufficiently brief the narrative on the second page and thus got confused about my assigned heading for the initial climb.By deviating from my assigned heading in the SID; I flew into the approach path for Runway 8. The mistake was discovered as I noticed the orientation of the runway and noticed a business jet passing under my flight path that did not look right. I recognized my mistake at that point and took corrective action. Just a moment later approach responded with an admonishment and a correcting vector.A significant contributing factor was my complacency in briefing the SID due to the clear weather prevailing. I had the routing waypoints programmed in the GPS and was not concerned about terrain a clearance due to the visibility. I improperly lost the importance of the initial climb vector and how critical that is for traffic flow at busy airports. Further; as a result of low recent flight hours over the proceeding 12 months my operation in congested LA airspace had been limited to the point where that was the first SID I had flown in over 20 months. As a result; I did not recognize that I had an incomplete understanding of my clearance in that I thought my instructions were to fly directly to VYN upon takeoff. I did not recognize that a takeoff clearance without an initial vector of some sort is very unusual and that I should have asked for clarification.