● Your fishing companion

Know the water.
Read the river.

Identify every fish, map every water, learn the craft, and keep a life list of every catch — all in one field kit built for the people who'd rather be waist-deep in a river.

Beaver Creek
Water temp
52°F
Flow
240cfs
Clarity
Clear
Bite
Good
The catch log
A life list
worth keeping.

Log every catch with a photo, length, weight, the fly you tied on, and exactly where you were standing. Watch your collection grow — species by species, season by season, personal best by personal best.

angler holding a brown trout over the net

Brown Trout · 18½"

Life list — 12 of 40 species

The waters map
Find the water
near you.

Real satellite imagery of every river, lake and stream — tagged native, stocked or wild, with access points, regulations, and where the fish have been found.

The encyclopedia
Know every species
in the water.

1,200+ species drawn from iNaturalist and enriched with our own notes on habitat, season, and what they're biting.

Rainbow TroutOncorhynchus mykiss
Brown TroutSalmo trutta
Brook TroutSalvelinus fontinalis
Cutthroat TroutOncorhynchus clarkii
fly reel and fly box on a landing net
Technique & gear
Match the hatch.

Pick your target and the conditions — Rivr recommends the fly, lure, and presentation that actually work, with rigs, knots, and starter loadouts for every style from fly to ice.

Montana · Resident● Active
2026 Fishing License
D. MARZARI · #MT-4821993
Valid throughFeb 28, 2027
TypeSeason + Conservation
TroutBassDaily limit 518" min
🚤  Boat registration · MT-1234-AB · renews Jun 2027✓ reminder set
Permits & licenses
Legal, without
the guesswork.

Keep every fishing license and boat registration in one place, get a nudge before they lapse, and see exactly what's legal on the water in front of you.

  • One wallet — every license & registration, always with you, even offline.
  • Renewal reminders — never fish or launch on an expired permit again.
  • Know the rules — daily limits, size minimums & catch-and-release zones per water.
  • Buy & renew — direct links to your state's fish & wildlife agency.
The river's waiting.

Start your life list, download an offline map, and get out there.

Get Rivr — it's free