The Fly Fishing App with Live River Conditions
Angler Tech is a fly fishing app for iOS and the web with live USGS streamflow, water temperature, public access points, catch logging, and a practical fly reference for trout waters across the United States.
What the App Does
- Live streamflowReal-time USGS CFS on 10,000+ rivers, with a wading-safety and fishable/high/low read.
- Water temperatureUSGS gauge data plus nearby reservoir readings, matched to each species' feeding range.
- Access pointsFind public fishing access and boat ramps near the water you plan to fish.
- Fly referenceBrowse fly patterns with seasonal guidance, hook sizes, and presentation tips.
- Catch logRecord catches, photos, locations, and conditions in one place.
Fly Fishing App FAQ
Is Angler Tech free to download?
Yes. The live river map, streamflow readings, water temperatures, access points, catch log, and fly reference are free to use.
Which rivers does the fly fishing app cover?
Every gauged trout river in the United States. Live USGS streamflow and water temperature data is pulled on demand for 10,000+ rivers and streams, plus reservoir and lake data from USBR and USACE.
How fresh is the river data?
Live. USGS gauge data refreshes every 15 minutes at the source; Angler Tech fetches it on demand each time you open a river, so the CFS and water temp reading is never more than a few minutes old.
Does the fly fishing app work offline?
A connection is required for current river readings and map updates. Previously loaded information may remain visible temporarily, but live conditions require service.
Is the app iOS only?
Angler Tech runs on iOS (iPhone and iPad), Android, and the web. The iOS build is our primary platform and gets features first.
Start fishing smarter
Free download. No credit card required for the map, live conditions, or basic fly picks.
Map
Fly Guide