  Singapore, an urbanized and populated country with high penetration of
smartphones, provides an excellent base for citizen-centric participatory
sensing applications. Mobile participatory sensing applications offer an
efficient means of directing feedback to government agencies for timely
identifying and solving problems of citizens' concern. While real deployments
of such applications are on an uprising trend in Singapore, there is no
concerted effort that studies the {\em user experience} of these applications.
To fill this gap, we conduct a market study by analyzing the user reviews on
the Google Play and Apple App Store for six major mobile crowdsourcing
applications created by Singapore government agencies. This study was carried
out for a period of 4 months during which we collected and analyzed 592
customer reviews. This was also supplemented by our personal use of the
applications during the same period.
  This paper presents the methodology and findings of this study, as well as
our recommendations of what improvements that these applications could
incorporate. We classify user reviews into 8 major concerns, and recommend 9
features to enhance the applications' utility. The recommendations are
presented in terms of user interface, incentive, and publicity.
