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Three mobile radars that locate fish in seconds
Your rod is ready, the breeze invites you to cast, and now all that's left is to figure out where the prey is hiding. With the right sonar, that mystery lasts as long as your phone displays the first echo. Install the app, pair your device, and replace guesswork with live data: depth, temperature, and schools of fish clearly described.
Three solutions without internet to never get lost again
Every angler has his or her own style: some explore lakes from a kayak, others cast from a dock, and the more inquisitive explore remote shores. That's why there are so many different styles. fishing radars from your mobile phoneBelow, you'll find three leading models—Deeper CHIRP+, Garmin Striker Cast, and Lowrance FishReveal App—analyzed for range, battery life, and exclusive features. Choose the one that suits your scenario, or combine them for pro-grade mapping and logging.
Deeper CHIRP+: Wi-Fi sonar with a range of 100 m
Weighing just 90g and featuring a spherical housing, Deeper CHIRP+ fires modulated frequency pulses (100–290 kHz) that separate 1cm targets at depths of 15cm–100m. It connects directly to your mobile phone via Wi-Fi (range up to 100m) and generates bathymetric maps when towed from a kayak or canoe.
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Advantages: Three beams (47°, 20°, 7°) instantly switchable; 6-hour battery rechargeable via USB-C; “Gelo” mode for ice fishing with vertical zoom.
Limits: In choppy saltwater, surface detection requires reduced sensitivity; the housing floats high and can be swept away by strong winds.
Ideal for: Anglers who alternate between shore and light boat and want extreme detail without cables.
Garmin Striker Cast: GPS Accuracy and Quickdraw Maps
This rectangular sonar (75 g) connects via Bluetooth 5.0 up to 60 m and combines a 260/455 kHz dual-beam transducer. It includes integrated GPS: record waypoints and create Quickdraw Contours maps without depending on your phone.
Advantages: 10-hour battery life; power-saving mode that only activates ping when you touch water; compatibility with the Striker app for sharing maps with the Garmin community.
Limitations: No narrow CHIRP beam; 6 cm separation resolution; firmware updates via PC only.
Ideal for: Users who value standalone GPS and prefer to tow the sonar behind a boat or launch it from a dock without reaching great distances.
Lowrance FishReveal App + portable sonar: 2D/3D details
Lowrance brings its FishReveal algorithm to mobile devices via an app that processes data from a small wireless transducer (sold separately). It combines a 455 kHz DownScan signal with conventional sonar to colorize fish and structure on the same screen.
Advantages: Traditional 2D visualization and background 3D rendering; integration with the C-Map ecosystem for global bathymetry; option for manually adjustable noise filters.
Limits: 50 m wireless range; high power consumption (4 h per charge) when using continuous DownScan; app requires initial online registration.
Ideal for: Anglers who want to instantly differentiate between rocks, logs, and fish in a unified view and already work with C-Map cartography on other Lowrance equipment.
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Range, autonomy and price of each option
| Model / App | Calm wind range | Autonomy | Beam/frequency | Approx. RRP. |
|---|---|---|---|---|
| Deeper CHIRP+ | 100 m wifi | 6 h | 7°, 20°, 47° / CHIRP | 229 € |
| Garmin Striker Cast | 60 m Bluetooth 5.0 | 10 a.m. | 260 / 455 kHz | 179 € |
| Lowrance FishReveal Kit | 50 m wifi | 4 h | 455 kHz DownScan + 200 kHz | 199 € |
Score your first virtual capture
Download the app you like best, update your firmware, and charge your battery tonight. Tomorrow, launch your sonar, perform ten scans, and save your first bathymetric map. In Part 3, we'll design a dock, kayak, and shore test plan, and you'll learn how to interpret the logs to maximize your catches. The screen is already showing ripples of underwater life!