What's the best time to go fishing today?
Moving water and a stable barometer. Fish feed hardest around tide changes — the hour or
two before a high or a low — and during the moon's major and minor solunar periods. Castline
scores every hour of your day 0–100 on exactly those signals, and marks the best bite window
right on the tide chart.
How does barometric pressure affect fishing?
Fish feel a front before you do. A steady or slowly rising needle switches feeding on;
a hard, fast fall ahead of a front can trigger a short flurry and then shut the bite down.
Castline tracks pressure hour by hour and weights a quarter of the score to it.
What is a solunar period?
The almanac's majors and minors. When the moon sits overhead or underfoot, feeding picks
up — those are the majors. Moonrise and moonset give the shorter minors. Castline computes
both to the minute for your spot and folds them into the score.
Which tide is best for fishing?
The moving water either side of a high or low, not the slack in between. Slack tide is
nap time. Castline's score peaks when the tide is actually running, measured from real NOAA
tide station predictions rather than guessed.
Does the fishing forecast work offline?
Yes. Your latest forecast and tide chart are cached on the phone, so at the ramp with no
signal you still see the most recent score and windows. No account is needed for any of
the forecasting.
Is Castline free? What does Pro add?
Today's score, the tide chart, saved spots and the full score breakdown are free, with no
ads pushed at them. Castline Pro unlocks the whole week as a scored fishing calendar — seven
days of tides, bite windows and moon — at $5.99/month or $39.99/year after a 7-day free
trial, cancelable anytime in Google Play.
