Know what you caught.

Point Chum at a fish and the name appears in the viewfinder. Then the rules for the water you’re standing in, and a log that keeps the catch. All of it with no signal.

Free. No ads. iPhone.

The Chum camera naming a king mackerel in the viewfinder, on an iPhone

The name, before you take the pictureIt’s reading the viewfinder, not the photo

Nothing leaves the phoneWorks with no signal

It knows before you snap

The name appears in the viewfinder before you take the picture, because identification runs on the phone and nothing leaves it. 280 Atlantic and Gulf species.

The rules where you’re standing

Size, bag, and season for your waters, state and federal, chosen by where you are. Every rule names its source and the day it was checked.

A log that keeps the catch

Photo, species, length, weight, kept or released, and the moment it happened: tide, moon, barometer, and the waters you were in.

Got a photo? Try it.

Drop a picture from your camera roll and the same identifier names the fish, then shows the rules for your state. Free, no sign-up, nothing to install.

Identify a fish

The rules where you’re standing.

A king mackerel in North Carolina waters, the way Chum shows it. The source and the check date sit on every rule, and the official rulebook is always the final word.

NC DMF 2026 · checked 2026-08-21

King MackerelKing · Kingfish · Smoker

24 in fork length, minimumTip of the jaw to the fork of the tail

3 per person per dayYear-round

Lateral line dips below the second dorsalCheck the line, not the spots

State record 82 lb 4 ozOff Ocracoke, 1999

What you’ll catch.

280 saltwater species, offshore to inshore, each with how to tell it apart, what it’s like on the table, the rules for your state, and the record to beat.

Mahi-MahiDolphin · Dorado

10 per day in NC, no size limitOr 54 per trip, whichever is less

State record 79 lbCape Hatteras, 1993

King mackerel — **King Mackerel**King · Kingfish · SmokerNC: 24 in fork length, 3 per day

Summer flounder — **Summer Flounder**FlukeNC: 15 in, 1 per day, Sep 1 to 14

Red drum — **Red Drum**Redfish · Puppy drum · Channel bassNC: 18 to 27 in slot, 1 per day

**Cobia**Ling · LemonfishNC: 36 in fork length, 1 per day, May to Dec

The Chum Catch Log on an iPhone: trips shown as piles of catch photos, with their names, dates and counts

Tide, moon and pressure, filled inThe conditions you never write down

Trips build themselvesName one, add a note, or leave it

Kept or released, counted against the limitThe tally shows where you stand

Backs up when you have barsNever waits for them

A log that fills itself in.

Every catch lands in the Catch Log with its photo and its name. Length, weight, kept or released are one tap each. Where you were, the tide, the moon and the pressure are written down for you, so a good day can be found again.

Trips, days and species are three views of the same log. Search it by fish, by place, or by the note you left.

And this is what leaves the app: a card for the group chat, with no location on it.

Catch card: red snapper, 29 inches, 13.2 pounds, North Carolina waters

Forty miles out. No bars. It still answers.

Identification runs on the phoneNo upload, no waiting, no signal needed
Regulations and species pages are on boardUpdated in the background when you’re back in range
The log is on boardIt backs up when there’s signal and never blocks on it

Map of the United States with the 18 Atlantic and Gulf coast states, Maine to Texas, in blue and the West Coast in a lighter blue

Atlantic and Gulf, Maine to Texas.

Covered now18 states, Maine to Texas, and the federal waters off them
West Coast nextSpecies and rules arrive as an update that installs itself

Maine, New Hampshire, Massachusetts, Rhode Island, Connecticut, New York, New Jersey, Delaware, Maryland, Virginia, North Carolina, South Carolina, Georgia, Florida, Alabama, Mississippi, Louisiana, and Texas.