Measure a fish from a photo
Weigh, measure length and age your fish, all from a phone. Snap your catch and fishline.ai returns the species, length, weight and an age estimate.
Coming soon to the App Store and Google Play.
Inside the fishline.ai App
From the photo to the Catch Log to the map. Every fish you measure, in one app.
Photo in. Numbers out.
Take a photo or pick one from your camera roll. fishline.ai returns the species, length, weight and an age estimate.
Every fish, saved.
Each catch keeps its photo, its numbers, the water and the date, private until you choose to share it.
See where fish are caught.
Catches rolled up by state and county, with guides and charters pinned in their own counties.
Measure a Fish in One Photo
No scale, no tape, no guessing at the boat ramp. One photo, and the fish is measured, logged and ready to share.
Take the photo
Hold the fish up like you already do and snap a picture, or upload one from your camera roll.
Get the numbers
Pick weight, length or age, 1 credit each. fishline.ai reads the photo and returns them with the species.
Log it or share it
Every catch lands in your Catch Log. Keep it private or post it for other anglers to see.
The Free Fish Weight Calculator
Not ready for the app yet? Pick the species, enter the length, and get an estimated weight from the same numbers the app uses. Add a girth for a closer number on a fat or skinny fish.
Try the Free CalculatorWhere are the big fish coming from?
The fishline.ai Catch Map rolls measured catches up by state and county, so you can see which waters are producing before you plan a trip.
Catches show by state and county only, never an exact spot. The full map lives in the app.
Coming soon to the App Store and Google Play.
Everything in fishline.ai
Measure From a Photo
Species, length and weight from one clear photo of the fish. No scale or tape needed.
Age Estimate
A rough age for the fish from its species and size, alongside the length and weight.
Catch Log
Every fish you measure, saved with the photo, the numbers, the water and the date.
Spots
Group catches by lake, river or one fish you keep coming back to, with a personal best for each.
Catch Map
Catches rolled up by state and county, so you can see where the heavy fish are coming from.
Guides & Charters
Find a guide or charter captain by state, species and trip type, and book a trip.
Run a guide service or a charter? Get listed in Guides & Charters
The fishline.ai Story
fishline.ai was built because every angler knows the moment: a good fish in your hands, a quick photo, and no scale or tape in reach. By the time the story gets told, the fish has grown.
So we built the tool we always wanted. A photo in, the numbers out. AI that finds the nose and the tail and measures against what is in the frame, a weight from each species' own length to weight data, and an age estimate from how that species grows.
Proof, not tales.
Nate Jewell, Founder · fishline.ai
Common Questions About fishline.ai
You take a clear photo of the fish and fishline.ai's AI identifies the species and estimates the length from what is in the frame, then works out the weight and a rough age from that species' length to weight and growth data. Results are estimates, so a photo with the whole fish in view gives the best numbers.
The app is free to download, and every account gets 5 free credits a month. Pro and Elite plans add credits, Spots and the full Catch Map.
Pick what you want from each photo: the weight, the length, the age, or all three. Each one is 1 credit. The species comes free with any of them, and the growth projection comes with age. Every account gets 5 free credits a month. Pro gets 10. Elite is unlimited, with fair use of 30 photos a day. If a number can't be read from your photo, its credit comes back.
Freshwater and saltwater species, from bass, walleye, crappie and catfish to trout, salmon, redfish and snook.
No. Every catch stays in your own Catch Log until you choose to share it.
More questions? Contact us directly
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No more fish stories.
Free in your browser. iPhone and Android coming soon. Measure your next catch from a photo.
Coming soon to the App Store and Google Play.