Best Deeper PRO Fish Finders – Best Fish Finders Today
What Is the Deeper PRO+?
The Deeper PRO+ is a castable, boat-free fish finder. Instead of mounting a display on a boat or kayak, the entire sonar unit is a ball you cast out on your fishing line — it floats, scans the water below and around it, and streams the results straight to the Deeper app on your phone or tablet over WiFi. There's no separate screen to buy or mount.
It's one of the more distinctive products in the fish finder space precisely because it removes the "finder" screen altogether and puts everything in your pocket.
Key Features
- Castable sonar — cast it out like a bobber; no boat, kayak, or mounting hardware required
- WiFi connection to your phone — live sonar readings display in the free Deeper app (iOS/Android), not on a separate screen
- Built-in GPS — lets you map contours and mark spots directly from the app, then revisit them later
- Dual-beam sonar — reads both a wide and narrow beam simultaneously for a fuller picture of what's beneath and around the unit
- Works from shore, dock, kayak, or boat — because it's not mounted to anything, it goes wherever you can cast it
Who It's Best For
The PRO+ suits anglers who fish from the bank, a dock, or a kayak without permanent electronics, and who want GPS mapping without installing a traditional chartplotter. It's also a popular ice-fishing companion in "castable" mode through a hole, since there's nothing to mount to a sled or auger.
It's a different tool than a traditional boat-mounted unit like a Garmin or Lowrance — if you already have a dedicated, wired fish finder on your boat, the PRO+'s main advantage is portability rather than raw display size or screen readability in direct sunlight.
Things to Consider
- Phone dependency — since there's no standalone screen, you're relying on your phone's battery, screen visibility in sunlight, and a stable WiFi connection to the unit
- Casting distance and depth range are limited compared to boat-mounted transducers with a wired connection
- Best suited to calmer water — casting and retrieving a floating sonar ball works better on lakes and calm rivers than in heavy current or surf