Free while in pilot
Know exactly what's in every fly box you own.
An inventory tool for anglers with more flies than memory. Catalog each pattern down to the color, hook size and count — then find it in seconds when the hatch is on.
No card required · Installs on your phone
Woolly Bugger
Confidence fly, always
| Olive | #8 | 7 |
| Black / Olive | #6 | 3 |
| White / Chartreuse | #4 | 2 |
Twenty-four tying colors, from sculpin olive to peacock — combine any of them for multi-color patterns.
A look inside
Boxes on the home screen, flies within each one. Everything is countable, searchable and yours.
Fly Keeper
Library · FriendsSpring Creek Dries
Mayflies and caddis for technical water
18 patterns · 96 flies
Streamer Box
Big water, bad intentions
11 patterns · 54 flies
Saltwater Flats
Bonefish and permit
9 patterns · 38 flies
Spring Creek Dries
Parachute Adams
Elk Hair Caddis
Pheasant Tail
Zebra Midge
What it does
Boxes, the way you store them
One box for spring creek dries, another for the flats. Each gets an icon and a color so you know it at a glance.
Colors and sizes, not just names
A Woolly Bugger isn't one thing. Track olive #8 ×6 apart from black/olive #6 ×3, with split-circle swatches for multi-color patterns.
Count up or down streamside
Tap plus or minus as you tie one on or lose one to a tree. Your counts stay honest without a spreadsheet.
Your own photos
Snap a fly with your camera, or bulk-import a folder and let filenames match themselves to your patterns.
A library that learns
Start typing and 115+ classic trout and saltwater patterns autocomplete. Names you invent are saved to your own library.
Show a friend your box
Send a friend request and browse each other's collections — read-only, friends only, never public.
About the pilot
Fly Keeper is early and entirely free. Accounts are limited to three fly boxes while we learn what anglers actually need — everything else, flies, colors, photos and friends, is unlimited.
Paid tiers with more boxes may come later. Nothing you build now will be taken away.
It runs in your browser and installs to your phone's home screen, so it works at the water without an app store.
Start your collection