Precision Fishing. Powered by Multimodal AI.

Real-time tactical bite forecasting, multimodal tackle & fish vision, generative rig engineering, and offline global cartography. Designed with uncompromising graphite precision.

Available Now On

Google Play

Explore Live Intelligence

100%

Offline-First Vector Atlas

< 1.2s

Multimodal Vision Inference

12+ Var

Hydro & Solunar Synthesis

Native Android App

Tactile Cartography & Real-Time Bite Engine

Test the Intelligence Engine

Experience the same structured AI outputs delivered natively to Android devices on the water.

Target Species

Largemouth Bass

Northern Pike

Brown Trout

Walleye / Zander

Barometric & Weather Front

Falling Pressure (Pre-Front)

Stable High (Bluebird Sky)

Heavy Overcast & Chop

Water Body Context

Deep Alpine Lake

Rapid River Tailrace

Shallow Vegetated Reservoir

Dynamic synthesis based on Pydantic `BriefRequest` schema

HTTP 200 · LATENCY 1.1s

91 / 100

Aggressive Pre-Front Feed on Weedlines & Drop-Offs

Barometer dropping 2.8 hPa over 3 hours. Feeding activity elevated across shallow windblown flats. Fish are aggressively ambushing baitfish before the incoming low-pressure front.

Optimal Feeding Window

06:15 - 08:45 AM (Major)

Matched Tackle Item

110mm Suspending Jerkbait

Tactical Presentation

Erratic twitch-twitch-pause (3s pause cadence). Target secondary points and submerged timber edges.

Select Sample Tackle Ingestion

110mm Suspending Minnow

Slender hard bait with treble hooks

4.8" Soft Plastic Paddletail

Ribbed swimbait body, natural ayu

Double Willow Spinnerbait

Overhead wire frame with nickel blades

Hollow Body Topwater Frog

Collapsible weedless body for heavy mats

FishIn's multimodal vision model ingests raw field photography taken on the boat or shore, parses lure geometry, and extracts physical dive characteristics.

99.4% Multimodal Match

VISION INFERENCE

Vision 110 Suspending Jerkbait

Multimodal classification maps camera frame against 12 lure taxonomies, calculating optimal water column delivery and retrieve dynamics.

Lure Category

HARD PLASTIC / MINNOW

Working Depth

1.2 - 2.1m (Suspended)

Optical Contrast Score

High Contrast Silver/Black Flake

Kinetic Profile

Darting Lateral Slash + Flat Wobble

Select Rig Architecture

Texas Rig

Drop Shot Rig

Carolina Rig

Feeder Paternoster

FishIn's generative rig engine designs, verifies, and calculates component spacing (sinkers, swivels, stops, leaders) for specific bottom substrates and species.

RIG SYNTHESIS ENGINE

VERIFIED BALANCE

Texas Rig (Weedless Bullet)

Optimized for snag-free penetration through dense aquatic vegetation and brush piles without fouling.

Recommended Knot

Palomar Knot (95% Knot Strength)

Leader Material & Test

12-16 lb 100% Fluorocarbon

Terminal Sinker Weight

3/16 oz Tungsten Bullet (Unpegged)

Target Substrate

Thick hydrilla, lily pads, submerged timber

Everything Built Inside FishIn

A deep, comprehensive look into the features powering every cast, spot, and catch.

AI Tactical Bite Forecast & Fish Score

Unlike generic weather forecasts, FishIn runs a multi-variable scoring model that synthesizes 3-hour barometric delta, solunar major/minor feeding peaks, solar elevation, lunar illumination, water temperature curves, and cloud cover into a unified 0-100 bite index. Delivers precise hour-by-hour tactical game plans.

Solunar Major & Minor feeding windows mapped to local coordinates
Barometric 3-hour pressure trend weighting calibrated per species
Generates customized tactical advice based on your actual tackle box inventory

Multimodal Tackle Scanner

Snap a photo of any lure, fly, or soft plastic. FishIn's computer vision identifies lure category, diving depth, color contrast, and suggests exact water clarity conditions for maximum hookups.

Identifies 12+ lure classifications from crankbaits to jigs
Suggests target species and optimal retrieval cadences
Stores lures in your digital tackle box for AI game planning

AI Fish Scanner & Biometrics

Instant camera identification of freshwater and saltwater fish. Estimates specimen length, approximate weight range, and automatically populates catch log metadata.

Species taxonomy identification with conservation alerts
Visual health and spawning condition assessment
Auto-fills catch log species, timestamp, and GPS coordinates

Adaptive AI Fishing Coach

Conversational domain coach adapted to the angler's skill level. Beginners receive step-by-step knot guides and safe bank spots; advanced anglers get micro-tuning on lure presentation and thermocline depth.

Strict domain guardrails: no hallucinated advice or drift
Context-aware: factors in current spot conditions and weather
20 daily interactions for quick tackle tweaks on the water

Rig Engineering & Knot Studio

Interactive terminal for designing custom rigs. Calculates exact distances between floats, shot weights, swivels, and hooks. Includes step-by-step vector guides for Palomar, Uni, Blood, and FG knots.

Rig design verification ensures components are balanced
Step-by-step illustrated knot guides with breaking-strength ratings
Community rig sharing and offline blueprint storage

100% Offline Global Spot Atlas

Fishing happens beyond cellular towers. FishIn bundles compact spatial binary blocks (`world.bin`) allowing phones to query spots, depth boundaries, and country packs completely offline.

Ultra-compact binary tile format for fast zero-lag map zooms
Country packs downloadable for remote expeditions
Local GPS positioning without consuming cellular data

Automated Catch Logbook

Log catches in seconds. Automatically captures telemetry: exact weather, barometric pressure, solunar period, and lure used at the exact moment of the catch. Private by default.

Private by design: spots are never leaked without consent
High-resolution photo backup to server with FishIn Pro
Personal catch statistics, weight trends, and seasonal heatmaps

Community Spots & Friends

Connect with local anglers, share public catches, review community spots, and climb verified leaderboards without burning your private honeyholes.

Community spot updates synchronized every 5 minutes
Spot ratings, hazard warnings, and recent activity reports
Granular privacy settings: choose what to share with friends

Built for Claude 3.5 Haiku Multimodal Intelligence

How FishIn leverages frontier LLMs to solve complex physical domain challenges on water.

End-to-End Intelligence Pipeline

Production Architecture

01. EDGE CLIENT

Native Android Client

Kotlin & Jetpack Compose. Collects onboard GPS, local sensor telemetry, camera frame captures, and queries offline spatial index `world.bin`.

02. API GATEWAY

FastAPI & Pydantic

Strict Pydantic schemas enforce typed inputs. Sanitizes prompt parameters, verifies user tokens, and rate limits edge requests.

03. COGNITIVE ENGINEClaude 3.5 Haiku / Vision

                Sub-second multimodal cognitive engine: analyzes unstructured visual tackle and catch photos, processes multi-variable environmental vectors, and returns structured JSON schemas for premium users with instant on-water latency.

04. PERSISTENCE

Supabase RLS & Cloud

PostgreSQL with Row-Level Security, automated photo backups, real-time community spot sync, and Google Play billing verification.

Why Claude 3.5 Haiku is Fundamental

Natural ecosystems are inherently chaotic. Claude 3.5 Haiku provides unmatched reasoning over multi-variable physical systems (barometric gradients, thermal stratification, lunar harmonics) with strict structured JSON schema adherence, ultra-fast sub-second responses, and edge efficiency.

Multimodal Computer Vision

Anglers photograph tackle and fish in unpredictable outdoor lighting: glare, wet surfaces, water droplets, and low contrast. Claude 3.5 Haiku's multimodal vision capabilities excel at subtle biological taxonomy, instant specimen species classification, and geometric tackle identification.

Startup Program Roadmap

The Claude for Startups Program accelerates our deployment of Claude 3.5 Haiku for instant photo analysis and multi-turn conversational voice coaching on water, powering automated ecological catch-and-release telemetry and premium AI tools.

Free For Every Angler. Pro For The Obsessed.

Get started completely free or upgrade to FishIn Pro for unlimited multimodal AI intelligence.

Standard Angler

$0 / forever

Everything needed for daily fishing and logging your personal catches.

Unlimited offline spots in home region
Full offline catch log & tackle box
Solunar major/minor feeding times
Community spot browsing & friends
— Advanced AI Tactical Game Plans
— Multimodal Tackle & Fish Scans

Download Free on Google Play