Security and confidentiality are important aspects needed to exchange messages or information through the Internet. Development of technology for the Internet network allows
everyone to exchange data and information without limitation of time and distance. Without
the guarantee of security, other parties can easily access the information transmitted over a
network or Internet. The issue raised in this research is on how to secure messages or
information so that safety can be assured. The purpose of this research is to apply the right
and quality steganography technique. This study uses Least Significant Bit (LSB) algorithm
applied to mobile applications. The indicators used in the algorithm are color, processing time
and size of the image carrier. The results of this study indicate that the Least Significant Bit
algorithm can run on mobile applications with good quality. This algorithm is able to process
color and grayscale images quickly and able to increase slightly the size of the original image.
These algorithms can contribute to the message or information security techniques, but it can
be used also by the secret services, companies and government agencies.