  Dynamic analysis has emerged as a pivotal technique for testing Android apps,
enabling the detection of bugs, malicious code, and vulnerabilities. A key
metric in evaluating the efficacy of tools employed by both research and
practitioner communities for this purpose is code coverage. Obtaining code
coverage typically requires planting probes within apps to gather coverage data
during runtime. Due to the general unavailability of source code to analysts,
there is a necessity for instrumenting apps to insert these probes in black-box
environments. However, the tools available for such instrumentation are limited
in their reliability and require intrusive changes interfering with apps'
functionalities.
  This paper introduces AndroLog a novel tool developed on top of the Soot
framework, designed to provide fine-grained coverage information at multiple
levels, including class, methods, statements, and Android components. In
contrast to existing tools, AndroLog leaves the responsibility to test apps to
analysts, and its motto is simplicity. As demonstrated in this paper, AndroLog
can instrument up to 98% of recent Android apps compared to existing tools with
79% and 48% respectively for COSMO and ACVTool. AndroLog also stands out for
its potential for future enhancements to increase granularity on demand. We
make AndroLog available to the community and provide a video demonstration of
AndroLog (see section 8).
