Bass

Match the lure to the water temperature

Bass lures in this app are scored against a temperature band, then adjusted for clarity, wind, and the time of day. The same reading always returns the same first pick.

Cold, about 40 to 65 F

A jerkbait is in range here, and slow presentations get a bonus under 55 F. Twitch, then let it sit. A jig-and-minnow profile is the walleye version of the same idea. If the water is still in the 50s and the cover is rock, a ned rig is in range too.

Mild, about 50 to 85 F

A spinnerbait covers stained or muddy water and any wind that is not dead calm. Chartreuse shows up once the water is stained. A chatterbait is the close second on weeds. A stick worm scores well when the water is clear and you can let it fall.

Warm, about 65 to 90 F

Topwater only jumps ahead on a calm dawn or dusk in water that is not muddy. A sunny clear morning in the mid 70s on a shallow flat is the walk-the-dog window. Strong wind, muddy water, or the middle of the day pushes that bait down the list.

The top pick is free. $5 adds the next four lures, the color and the rig, a checklist, and a short game plan.