Devices, systems, and methods associated with analyte monitoring devices and devices incorporating the same

A glucose monitoring system, comprising:

• (1) an on body electronics unit configured to be worn on a user's skin, the on body electronics unit comprising:
• an on body electronics unit housing;
• a glucose sensor, at least a portion of which is configured to be positioned in the user's body and detect a glucose level in a bodily fluid of the user;
• and
• on body electronics disposed within the on body electronics unit housing and coupled with the glucose sensor, the on body electronics comprising processing circuitry, a battery, and an antenna, wherein the on body electronics are configured to transmit data indicative of the glucose level to a reader device in response to a request from the reader device;
• and
• (2) the reader device comprising:
• a display;
• a wireless communication module configured to receive the data indicative of the glucose level;
• one or more processors;
• memory coupled with the one or more processors, the memory storing a glucose monitoring software program that, when executed by the one or more processors, causes the one or more processors to:
• determine if a glucose sensor warmup time is active and, if so, output to the display the glucose sensor warmup time, wherein the glucose sensor warmup time indicates a time when the glucose sensor is ready,
• output to the display a glucose sensor expiration time in a time unit based on a comparison of the glucose sensor expiration time and a predetermined threshold,
• output to the display a graphical user interface comprising a plurality of bar portions, wherein each bar portion of the plurality of bar portions represents a corresponding percentage of time a plurality of glucose level readings in a predetermined time period were within a corresponding glucose range, and
• output to the display a logbook interface comprising a plurality of user-selectable options, wherein the plurality of user-selectable options includes an insulin option, a food option, and a custom note option.