People accept the fact that mass vaccination is the most effective measure of preventing infectious diseases. It prevents 2 to 3 million deaths each year. One more essential fact is the vaccination is a critical step in reducing child mortality. At the crazy pace of day-to-day living in a modern world, it is difficult to remember when the next shot should be done or the serial number of the vaccine for future reference. As it is important, the digital application industry offers a decision by building immunization trackers.