  Delivering Rich User eXperience (RUX) with the current explosion of
smartphone as real ubiquitous computing device requires adaptive application
architecture. Rich Mobile Application (RMA) is likely the candidate
architecture for future mobile applications to deliver rich, immersive
experience to the smartphone users. Research and development in domain of RMA
has started and results are appearing in literature which advocates its future
trend and encourages review of RMAs. This article aims to present overview of
RMA and states clear distinction between Rich Internet Applications (RIAs) -
that are desktop-like Web applications - and RMAs to facilitate and accelerate
development of smartphone-centric application development tools and
technologies. RMAs are defined, their comprehensive overview is presented, and
current trends are described. Our study shows that despite of literal
similarity of RMA and RIA, they have dissimilar inward architectures.
Implicitly, understanding the distinctions between richness delivery in PCs and
smartphones as well as knowledge of inward similarity and difference between
RIAs and RMAs contribute toward development of enhanced smartphone's
applications to deliver RUX to mobile clients.
