I fully endorse ker17moh's comments. I too will never own an Apple product and have Android kit, including a Xoom tablet. An app which can function equally well offline as it can online would allow a level of portability that laptops cannot provide and would be very useful in research centres.
Having online access to the ancestry site is simply inadequate for those whom rely on FTM for their research. Android FTM - particularly a Honeycomb version gets my vote!