A hand held or portable device (1) is configured to include a multitude of factors from which sporting success conditions such as applicable to fishing and hunting success may be predicted. In one embodiment, these may include: a lunar information element (2), a solar information element (3), a barometric information element (4), and a temperature information element (5) that provide input (directly or indirectly) to combination elements (6) and a sport success prediction element (7) that may provide a simplistic or other display (8) to a user. A composite barometric-lunar-solar-temperature effect may be calculated for the present or for a remote time and date through a future time forecast element (17).