In today’s modern society with technological advancement, the way we remind ourselves has evolved from traditional ones like scrip papers or notes into electronic calendars. Reminding messages in electronic calendars are mostly triggered by a pre-defined “time” and then alarms the user. However, under some particular conditions, it is more ideal to use the “location” of users as a basis to remind them. In this research we develop a location-based personal task management application to realize the goal. Specifically, we use the beacon frames broadcasted from wireless access points as the basis of location information. When a user arrives at a pre-defined location, the application will pop up a reminding message for the user. The result of this research will be presented as an Android application.