We at Tripsy might have some of the features you need right now, and we certainly have an excellent solution for sharing itineraries with your clients on the web and via our iPhone/iPad/Mac app. Here's our post on the community: https://www.travelmassiv... show more
We don't have a way to import data from TripIt for now (unless you forward the itinerary via email -- then it works, but not very practical). I know this is a very requested feature, so maybe we'll add it in future updates.
We don't have plans right now to build an Android version, but we do support a read-only mode of the itinerary for now: https://tripsy.helpscoutdocs.com/article/43-how-to-open-the-itinerary-on-android-or-web-without-having-the-app-installed.