Honest guide
Fly fishing apps: which one for what
There are really two jobs a fishing app can do. Help you find water and know where you can fish, or help you read the water and call the play once you are there. This is an honest map of which app is best at what, from the team that builds Rivus.
TroutRoutes
Best for finding water and access
Shows the map and the gauge numbers, but does not read them into a play
OnWater
Best for public access, no paywall
Access and species maps, no hatch judgment or live read
FlyFishFinder
Best for mapped water at scale
A fishability badge plus guide-curated Pro Picks, not a read of your live conditions
FlyGuysNLies
Best for verdicts on western rivers
River verdicts and fly recs, but a fixed set of rivers, not your exact water
Cutty and IdentaFly
Best for looking hatches up
Beautiful hatch references, but a calendar, not a reaction to today
SnapHatch
Best for identifying a bug
Matches a bug in your hand to a fly, but needs a bug in front of you
Fishbrain
Best for logging and community
Huge community and every species, broad rather than fly and trout deep
Rivus
The play, right now
Reads your stretch live, pivots as conditions change, and knows the flies and gear in your own kit
Find the water
TroutRoutes is the one to beat here. Over 50,000 streams, land ownership and access, offline maps for no-signal canyons, and it even shows live gauge readings. If your question is where can I go and can I fish it, start there. OnWater is access-first too, with species filters and no paywall on public access.
Get a read on the day
FlyFishFinder is the most polished of these, and honest about being a decision tool, not just maps. It maps a huge amount of water, layers on easement data, and gives you a fishability badge plus Pro Picks curated by guides. FlyGuysNLies posts river verdicts and fly recs for a set of western rivers. Both give you a call. The difference is where the call comes from.
Get the play
Rivus is on the ground with you, not 30,000 feet up.
Every app above hands you something to read. A map. The raw gauge numbers. A hatch calendar. A fishability badge. A pick a guide posted last week. Rivus reads your stretch and tells you the play, then stays with you.
A hatch chart is the 30,000-foot view of what usually comes off this month. Rivus is on the ground with you. It reads the current flow, water temperature, weather, and hatch for the exact water under your boots, tells you whether it is even worth fishing, and changes its answer as the day changes, when the flow bumps, the water warms, or a front rolls through. It knows what is in your own fly box and kit, points you to the best of what you already own, and shows you the gap. And when the bite quits or your fly stops working, you ask Eddy, and it helps you read the change.
Where Rivus is not your app
If you need to find new water or check who owns the bank, get TroutRoutes. Rivus reads the water you are already headed to, on a curated set of trout rivers that keeps growing. We would rather cover a river right than claim to cover them all.