One of the implementations of the smart city concept is by making use of Information and Communication Technology (ICT)-based applications in providing public services. The Regency of Blora is one of the Indonesian regencies belonging to the 100-Smart-City. The aims of the research are identifying the applications contained in the programs in the smart city master plan on each dimension, identifying the applications most used to support smart city implementation, analyzing The Use of Aplication, and recommending applications required for implementing smart city. This research uses a qualitative approach. This research includes an application-based Blora Smart City development program implemented in six smart city dimensions. Applications that have been used properly are selected through focus group discussions (FGD). Application provider informants were selected purposively, while for application users five informants were selected. Data processing was carried out using in-depth interview transcripts. Data analysis was carried out by descriptive qualitative. The research result show that various applications have been used to support the realization of the Regency of Blora as a smart city. Some of the society members have been making use of the applications to deserve public services. However, to support the uses of ICTbased applications in an optimum level, it is necessary to make it easy to access internet, to socialize the existence of applications, and to obtain aspiration from local people for the policy of applying the applications. Evaluation of application utilization is recommended as a follow-up research through structured interview surveys of application users with a larger number of respondents.