Fish feed on a schedule. Most anglers ignore it. BiteTime puts that schedule on your home screen.
Solunar theory has predicted feeding activity since 1926 — based on the moon's position overhead, underfoot, rising, and setting. It is the closest thing fishing has to a cheat code. BiteTime calculates it all locally, for any spot, any day, up to a year ahead.
THE SOLUNAR ARC
Your entire fishing day in one view. A live arc shows the sun and moon tracking across the sky with feeding windows highlighted in real time. Major periods glow when the bite is on. Drag the timeline to scout any hour of the day before you head out.
THE BITE SCORE
One number, 0 to 100, that tells you whether to grab the rods. The Bite Score blends the solunar rating with real fishing weather — barometric pressure and trend, wind, and temperature — into a single score with a one-line explanation of what's driving it. No signal at the lake? The score falls back to pure solunar and keeps working.
DAILY RATING
Every day gets a 1-to-5 rating based on moon phase and feeding period alignment with sunrise and sunset. New moon and full moon days score highest. Quarter moons score lowest. You will know at a glance whether today is worth the trip.
FOUR FEEDING WINDOWS
BiteTime calculates all four daily feeding periods:
Major Period 1 -- Moon overhead (transit). Roughly 2 hours of peak activity.
Major Period 2 -- Moon underfoot (opposite transit). Same intensity, opposite side.
Minor Period 1 -- Moonrise. About 1 hour of elevated feeding.
Minor Period 2 -- Moonset. Same as moonrise, at the other end.
When a major period overlaps sunrise or sunset, activity spikes. BiteTime flags these overlap days so you never miss the best windows of the month.
52-WEEK FORECAST
Planning a trip three weekends from now? Check the daily rating and feeding times before you book. Swipe through a full year of forecasts, day by day, with moon phase and feeding periods for every date.
SAVE YOUR SPOTS
GPS follow mode updates automatically as you move. Save your favorite fishing spots — lake, river, pier, wherever — and BiteTime recalculates feeding times for each location and timezone.
BITE ALERTS
Never miss a window again. BiteTime can notify you before each feeding period starts — majors, minors, or both, with lead time you control. Set it once and let the moon do the scheduling.
WIDGETS
Home screen and lock screen. The medium and large widgets answer the only question that matters: when is the next bite window? Circular, rectangular, and inline lock-screen widgets keep the next window one glance away. Updated throughout the day. Tap to open the full forecast.
FEATURES
- Live solunar arc with sun, moon, and feeding period overlay
- Bite Score from 0 to 100 blending solunar and live fishing weather
- Daily fishing rating from 1 to 5
- Four feeding periods with duration and countdown
- Bite alerts before every major and minor period
- Interactive time scrubbing to preview any hour
- 52-week forecast with daily ratings
- Saved fishing spots with timezone support
- Medium and large home screen widgets
- Lock screen widgets with next-window countdown
- Sunrise, sunset, moonrise, moonset times
- Moon phase and illumination percentage
- Built on Meeus lunar algorithms and NOAA solar data
- All solunar math runs on your device — works offline, anywhere. No account. No tracking.
ABOUT SOLUNAR THEORY
John Alden Knight published solunar theory in 1926 after studying the feeding patterns of fish and game relative to the moon's position. The idea is simple: when the moon is directly overhead or underfoot, gravitational pull peaks and fish feed more aggressively. Moonrise and moonset create secondary feeding windows. Decades of fishing logs support the pattern. BiteTime puts it in your pocket.
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One purchase. No subscription. No ads.
Yours forever.
Questions or ideas? hello@spruzzolabs.com
