Know Today's Best Bite Window
See when fish are most active today so you know when to push and when to wait.
PrimeBite helps you decide when to fish, which days look stronger, and why a rating changed for the species you actually target.
Free to download on iPhone. Upgrade to Pro inside the app when you want deeper forecasting.
PrimeBite is built for real trip decisions, not just curiosity checks.
Open PrimeBite, see today's window, scan the next 30 days, and keep a record of what actually paid off.
See when fish are most active today so you know when to push and when to wait.
Use the forecast to spot better days before you burn time, fuel, or PTO.
Dig into the species view to understand what is pushing the rating instead of trusting a mystery number.
Most fishing apps flatten everything into one generic score. PrimeBite does not. Walleye, Muskie, Tuna, Mahi, and other species follow different patterns, so PrimeBite uses species-specific logic built from real evidence instead of one blanket answer for every fish.
See the windows that matter instead of guessing from a moon chart and hoping it lines up.
Spot stronger forecast days before you commit to the trip.
Use the logbook to build a record of what works for you over time.
PrimeBite does not use one blanket fishing score. Each supported species has its own model, and we openly explain the research and drivers behind the ratings.
Peak: Waxing and waning gibbous phases
Factors: Major timing, unified light (twilight + solar), seasonality
Source: Shaw 2021
Peak: Full Moon
Factors: Moon intensity, seasonal patterns
Source: Kuparinen et al. 2010
Peak: New Moon to First Quarter
Factors: Sea surface temperature, chlorophyll
Source: NC Sea Grant
Start with the free view, then unlock the deeper forecast when you want better trip planning, more species detail, and more context behind the rating.
Start Free On iPhoneThis should feel like a worthwhile upgrade for serious anglers, not a paywall slapped on top of a weak free app.
PrimeBite uses peer-reviewed, open-access research for the main drivers behind each rating, then calibrates how those drivers are weighted and mapped into the final score.
We publish the research, sources, and driver explanations for all supported species plus the general baseline. Exact calibration details stay proprietary.
Email: primebitefishing@gmail.com
Please include: device model, iOS version, app version, steps to reproduce, and screenshots.
We usually reply within 1-2 business days.