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Read the water
before you cast.

Capt’ns Log scores every hour against your species: pressure, tide, solunar, water temp, wind. Know when to go, where to focus, and what to use.

Free to download13 species coveredWorks offline
Local-first. Your catches stay yours.
The Advisor
One score, every hour
Advisor screen with the bite-score gauge
Your Journal
Every catch, remembered
Journal screen with logged catches
Trip Prep
Cached for the cove
Trip Prep offline caching screen
How it works

Score. Window. Lure.

Step 1 · The Score

One number. Every hour. Every species.

Pressure trends, wind, water temp, cloud cover, moon phase, tide. The Advisor reads them all against a model tuned for your target species, then gives you one honest score from 0 to 100.

Advisor screen showing the bite-score gauge
Poor
0–25
Sit it out. Tie tackle, rest the spot.
Fair
26–50
Possible bite. Bring the right lure.
Good
51–75
Conditions favor activity.
Excellent
76–100
Drop everything. Go fish.
Step 2 · The Window

Plan to the hour. Not the day.

A weather app tells you it’s a 40° day. The Advisor tells you the bite peaks at 5:48 AM, holds through 8:12 AM, then dies for the morning. Drag any hour on the 7-day timeline to see exactly what changed.

Hourly 7-day timeline scrubbed to a peak bite window
Step 3 · What to throw

Lure picks with the reason attached.

The Advisor matches conditions to a per-species lure playbook: three picks, ranked by confidence, with the actual reason next to each. Tap any pick for rigging, retrieve cadence, and when it works best.

Lure recommendation panel
Senko 5"
Senko 5"
Slow fall · low light · stained water
92%confidence
Squarebill Crankbait
Squarebill Crankbait
Falling pressure · deflects off cover
84%confidence
Spinnerbait 3/8 oz
Spinnerbait 3/8 oz
8 mph breeze · prop noise carries
71%confidence
Your Journal

Every catch makes the next one easier.

Log a fish in 30 seconds: species, size, lure, photo. Conditions are captured automatically. After ten catches the Journal starts surfacing your own patterns: which pressure trends produce, which lures are actually working for you, what time of day your big fish come from.

No social feed. No leaderboards. Just your fishing intelligence, compounding.

Journal screen with logged catches and insights
Falling pressure precedes 64% of your bass catches over 3 lb.
Pattern · 17 of 26 large bass catches
“Senko 5"” produced your two largest fish this year.
Pattern · lure performance
Cached for the cove

The reception out there has never been your friend.

Tap Prep for This Trip before you leave the truck. Capt’ns Log pulls the next 48 hours of conditions, the tide tables, your last 100 catches, and every lure detail for your target species, then keeps them on the phone. No cell tower required.

When you re-enter service, your new catches sync up automatically.

Trip Prep screen showing cached conditions, tides, and lures
Private by default

We don’t know what lakes you fish.

Capt’ns Log is local-first. Your catches live on your phone. Sync to the cloud is opt-in. No ads, no third-party trackers, no data brokers. The spot is still yours.

On-device first
Catches, photos, and patterns are computed and stored locally. Nothing leaves your phone unless you turn on sync.
No third parties
Zero analytics SDKs. Zero ad networks. Zero data sold. Conditions come from public sources; nothing flows the other way.
Spots stay secret
Saved locations and pins live on your device. Sharing a spot takes a deliberate tap.
“Does this app blow up my spot?”
A TestFlight tester, week one. The answer is no. There is no feed to blow it up on.
Species coverage

A model per fish.

13 species, each on its own scoring engine: bass, trout, halibut, walleye, catfish, salmon, redfish, speckled trout, striper, panfish, and corbina. Tuned to how that fish actually behaves. Available species depend on your US state.

Largemouth (Bass)
Largemouth
Bass
Smallmouth (Bass)
Smallmouth
Bass
Trout (Rainbow · Brown · Brook)
Trout
Rainbow · Brown · Brook
Speckled (Trout)
Speckled
Trout
Pacific (Halibut)
Pacific
Halibut
California (Halibut)
California
Halibut
Redfish (Inshore)
Redfish
Inshore
Striped Bass (Coastal · Reservoir)
Striped Bass
Coastal · Reservoir
Walleye (Lakes)
Walleye
Lakes
Panfish (Bluegill · Crappie · Perch)
Panfish
Bluegill · Crappie · Perch
Chinook (Salmon)
Chinook
Salmon
Catfish (Channel · Blue · Flathead)
Catfish
Channel · Blue · Flathead
Corbina (Open coast)
Corbina
Open coast
FAQ

Questions, answered.

Yes. Tap "Prep for This Trip" before you leave service and the app caches the next 48 hours of conditions, tide tables, your saved spots, and the full lure playbook for your target species. New catches sync when you’re back on a network.
The score is a transparent weighted model, not a black box. Pressure trend, wind, water temp, cloud cover, moon phase, and tide each contribute according to a species-specific recipe. You can see exactly what changed when the score moves.
At launch: largemouth and smallmouth bass; rainbow, brown, and brook trout; speckled trout; Pacific and California halibut; redfish; striped bass; walleye; panfish (bluegill, crappie, yellow perch); chinook salmon; catfish (channel, blue, flathead); and corbina. Each runs on its own scoring engine, and availability depends on your US state.
Yes. Catches, photos, and patterns are computed and stored on-device. Cloud sync is opt-in. We don’t sell data, run third-party analytics, or share saved locations. Sharing a spot takes a deliberate tap.
Free to download. Logging catches and your private journal are free forever. Pro unlocks live condition scores for all 13 species, the hourly 7-day timeline, and lure picks, with a 14-day free trial. No ads either way.
We’re a small team and shipping the right experience on one platform is better than shipping a watered-down one on two. Android is on the roadmap once 1.0 settles.
Available on iOS

Stop guessing.
Start reading the water.

Free to download. The fish don’t care which week you finally try it.

Download on theApp StoreQR code linking to Capt'ns Log on the App StoreRequires iOS 17 or later
Capt’ns Log
Free on the App Store
Download on theApp Store