wheretoflyfish installs straight from your browser: one tap from your home screen, full screen, and your saved rivers open without a signal. No app store, nothing to update; it's always the latest version.
You're using the app. Nothing more to do.
iPhone and iPad
Open wheretoflyfish.com in Safari.
Tap Share (the square with an arrow), then Add to Home Screen.
Tap Add. The trout icon opens the site full screen.
Android
Open wheretoflyfish.com in Chrome.
Tap the menu ⋮, then Install app (or Add to Home screen).
Computer
In Chrome or Edge, click the install icon at the right end of the address bar, or open the browser menu and choose Install wheretoflyfish.
On a Mac with Safari 17 or later: File, then Add to Dock.
What works without a signal
Your saved rivers. Save a river (♡) and its page, files and latest conditions are kept on this device until you unsave it.
Pages you've opened. The last 60 pages you looked at stay available.
Offline map areas. On the NJ and NY trout maps, the Offline button saves the map, streams and access points for the area in view.
More in Help. Live flows, weather and search need a connection. Kept conditions say how old they are. Clearing this site's data in your browser removes everything kept.