Pocket Informant by Web Information Solutions integrates to do lists with calendar management. To Do lists can be managed “Getting Things Done” (GTD) style, Franklin Covey style, or ToodleDo style. My personal preference is GTD, and it is good to see the other options. PI has the best calendar view of all the iPhone calendar apps I tried based on how I work. Specifically, it has the most useful and flexible weekly view calendar. Another great feature is that no matter which calendar view you are in as you drill down on details, there is a one touch back to monthly view button at the top of the screen. The options and flexibility of the list management is both a strength and weakness. I have a score of projects and a half dozen contexts. The lists can be sorted by project, contexts, next actions, all, in progress, overdue, due today/tomorrow, undated, and completed. This can be wonderful for getting to just the right details or bewildering if I’m not three cups of coffee into the day. PI’s good search feature saves the day until caffeine intake passes information overload.