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.
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.
Life list — 12 of 40 species
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.
1,200+ species drawn from iNaturalist and enriched with our own notes on habitat, season, and what they're biting.




The West's native trout, named for the crimson slash beneath the jaw. A willing riser to a well-placed dry fly, it holds in cold, clean freestone rivers and alpine lakes — a barometer for the health of the water it lives in.

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.
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.
Start your life list, download an offline map, and get out there.
Get Rivr — it's free