Best Castable Fish Finder

All those new and pro anglers struggle to find fish in saltwater or fresh water. A new tool has just arrived, allowing them to cast further and bring some serious catch. The Best Castable Fish Finder is not like the traditional fish casting method.

These fish finders can find your catch at a staggering depth of 300 meters. Handling and carrying them with your other gear is comfortable thanks to their portability features, making them a remarkable product. Further, these fishfinders have a couple of types

•          Casting model

•          Trolling model

 Let us dive into the underwater depths to check the operations and specifications of these fishfinders that will surely make your day after reading about them.

What Is A Castable Fish Finder?

A device that helps you to find fish in water. The castable fish finder has a wireless transducer that places on the water’s surface. In this type of sonar, a sound is emitted that fish can hear.

Moreover, castable fish finders can connect on Android devices or iOS through an app via Bluetooth or Wi-Fi. They don’t have a separate head unit to connect like traditional fish finders.

How the Castable Fish Finder Works?

By using sonar, a castable fish finder detects fish in water. Any fish in the water is then reflected off a sound wave by the system. Further, after measuring distance and direction, the angler determines the type of fish based on its length and direction. It saves time.

Besides, they are easy to operate as they don’t need much time for setup. You just have to connect the unit through an app and control it on your smartphone or tablet. They allow the anglers to cast far.

List Of Top 6 Best Castable Fish Finder

Image Product Details   Price
backpac Deeper PRO+ 2 Sonar Fish Finder Material


Item Package Dimensions
‎6.1 x 5.35 x 3.03 inches

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backpac Deeper PRO Smart Sonar Castable and Portable Smart Sonar Fish Finder

Product Dimensions
5.9 x 5.32 x 2.95 inches
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backpac Garmin Striker Cast, Castable Sonar Fish Finder

Product Dimensions
2.99″L x 2.99″W x 2.36″H

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backpac Deeper Chirp 2 Sonar Fish Finder Style
‎Deeper Chirp 2.0

Item Package Dimensions
‎6.06 x 6.02 x 3.11 inches

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backpac Reelsonar Portable Fish Finder Accurate Fish Depth Finder Material


Item Dimensions
‎2 x 2 x 1 inches

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backpac Deeper START Smart Fish Finder Material


Item Dimensions
‎4.53 x 4.33 x 3.15 inches

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1-Deeper PRO+ 2 Sonar Fish Finder

This castable fish finder is the best option for devoted anglers who loves to spend time catching fish. This is one of the most versatile fish finders that enables me to use it in any fishing setting but with proper fishing tools. Furthermore, it is suitable for kayak, boat, ice, and shore fishing. You don’t need any cable, drilling, or batteries to fix it on your kayak. I recommend this tool for small kayaks.

Deeper PRO+ 2 Sonar Fish Finder

The battery timing of this fish finder is amazing; it works perfectly for up to 9 hours. And the best thing is that it takes less charging time than a standard castable fish finder. It takes only 75 minutes to charge completely. If you are in a hurry and don’t have time to charge it completely, you need 45 minutes to charge it 80%.

This latest technology fish finder is integrated with 3 beam frequency. So, this feature enables me to cover a wide area. The faster beam is 47° (100 kHz), the mid beam is 20° (240 kHz), and the narrow beam is 7° (675 kHz). For ease in determining the cone width for the 7° narrow beam, multiply the water depth by 0.122. Plus, for the 20° scan, multiply the depth by 0.353; for the 47° scan, multiply the depth by 0.87.

It has a built-in GPS system. This powerful GPS system allows me to make lake maps from my kayak, and the best thing is I create lake maps from the shore, port, and bank. On the other hand, it offers perfect casting range and depth as it offers to scan down up to 330 feet or 100 meters. It gives accurate results and is compatible with iOS 13.0 and Android 7.0 Nougat and later.

For this, you need a robust rod as it is slightly heavy and weighs 3.2 ounces or 90 grams. For me, 3.2 ounces weight is heavy, and the castable fish finder must be lightweight so it will not affect the casting rod. Besides, the dimensions are L x W x H ‎2.56 x 2.56 x 2.56.


  • Highly versatile, it can be used in any fishing scenario
  • Outstanding battery life
  • Easy to operate
  • Scanning is perfect and accurate
  • Fish icons are helpful for newer sonar users


  • You must have a solid rod as it is a bit heavy
  • Not good for creeks and streams

2-Deeper PRO Castable and Portable Smart Sonar Fish Finder

Try this Best Castable Fish Finder designed for all-season and all types of fishing. It is suitable for kayak and boat fishing, ice fishing, and on-shore fishing. I used it for ice fishing and kayak fishing; it gives the best and most accurate results for ice fishing. Further, for kayak or boat fishing, ensure the unit is half in and half out of the water so it remains connected to Wi-Fi. The Wi-Fi signals disconnect when the unit is fully in the water and doesn’t work properly.

Deeper PRO Smart Sonar Castable and Portable Smart Sonar Fish Finder

It is easy to install, and the installation process takes only a few seconds as you don’t need any drilling, wires, or cables. Make sure for this fish finder, you must have a solid rod. It is also a bit heavy, as the above-mentioned castable fish finder is. The weight is 3.53 ounces, and the weak rod will not be able to bear this weight.

This fish finder is a wireless unit and will connect to the Wi-Fi and USB to give thorough and precise sonar feedback to my smartphone. It has compatibility with iOS and Android units. Additionally, it offers easy and simple usage. You just have to attach this unit to the fishing rod or the vessel, and it starts working.

The anglers can cast up to 330 feet down and scan 260 feet or 80 meters down with this fish finder. Besides, it can also target separation and has a precise target separation as small as 2.5 cm.

The battery timing is good, and it lasts longer than an advertisement. I used it for more than 3 hours, and when I checked the battery, it was still 62%. Moreover, it allows you to create bathymetric maps from your boat or kayak. It has access to your maps, photos, scans, points of interest, and notes on the web platform and fish deeper app.

This unit’s dimensions are L x W x H 5.9 x 5.32 x 2.95 inches.


  • Good battery life
  • The graph is easy to read; see weeds and bottom contours
  • Fish are viewed in different colors and are easy to see
  • Perfect for locating structure
  • Good for ice fishing


  • It gets disconnected if it is not half out of the water
  • GPS is not so great

3-Garmin Striker Cast, Castable Sonar Fish Finder

Experience this castable fish finder that is easy to operate and suitable for new anglers to pro anglers. Setup is quick and easy; you will be ready for fishing within a few minutes. You must download the app, connect the unit to your smartphone, and start fishing. Pair the system with the free app for streaming and viewing sonar on your Apple or Android devices.

Best Castable Fish Finder

Moreover, this fish finder works great in all types of water; it works best in saltwater, freshwater, and even flawless for ice fishing. It shows the fish and the structure clearly. Besides, it enables me to check the water’s temperature. The best part is that it has a water-resistant feature. It is water-resistant to ipx6 and ipx7 standards.

This unit allows me to create my fishing map as it comes with GPS. So, create the quickdraw map with 1′ contours. This is one of the sturdy fish finders that goes best for up to 25 pounds of fishing line. On the other hand, it is lightweight compared to the Deeper’s castable fish finders. It weighs only 2.65 ounces. So, it goes best with standard or light fishing rods. The dimensions are L x W x H 2.99 x 2.99 x 2.36 inches.

It has traditional 2D and sonar modes. This feature allows you to stream wirelessly from up to 200 meters away from the app. Besides, the battery life is up to the mark as it works up to 12 hours. But it drains the smartphone app quickly.


  • It is lightweight
  • The price tag is reasonable
  • The app is perfect and easy to use
  • It is perfect for newbies to pro anglers
  • It works great with freshwater and saltwater


  • It drains smartphone battery quickly

4-Deeper Chirp 2 Sonar Fish Finder

Level up your fishing game with this Best Castable Fish Finder 2024. This fish finder has the top castable CHIRP sonar; it has the most advanced sonar than the traditional ones. The traditional sonar sends a single-frequency pulse at one time. On the other hand, the CHIRP sonar sends a continuous frequency without distraction. The frequency that CHIRP sends ranges from low to high. So, due to low to high frequency, the unit’s reading is clear and has a high resolution compared to the traditional sonar.

Deeper Chirp 2 Sonar Fish Finder

The sonar has 3 beam frequencies, making this unit more efficient, accurate, and clear. The wide beam at 47° helps in finding worthy spots (100 kHz). Mid beam (240 kHz) at 20° is suitable for drilling in. While a narrow beam (675 kHz) at 7° is good for target species.

Moreover, it enables you to cast up to 394 feet, more than the units mentioned earlier. It helps you scan 330 feet down in the water and provides accurate results. Plus, with 0.4 target separation.

The most striking feature is that it makes its own Wi-Fi signals, which you can pair with your smartphone. This fish finder has compatibility with Android devices and iOS.

The battery timing is most remarkable as it works up to 15 hours, and the charging timing is less than the traditional fish finders. It takes only 2 hours to get 100% charged.

This is one of our list’s most versatile fish finders, as it is wireless, portable, castable, and effective. It is suitable for on-shore and off-shore fishing and can use in fresh and saltwater. This fish finder comes with 5 years of warranty.


  • It is perfect for finding fishing holes in new bodies of water.
  • It works flawlessly in cloudy and muddy water.
  • Battery life is good.
  • Suitable for all types of fishing


  • The price tag is high

5-Reelsonar Portable Fish Finder Accurate Fish Depth Finder

Do you have a tight budget and looking for a versatile Best Castable Fish Finder? Then this is probably designed for you. This Best Budget Castable Fish Finder is highly versatile as it is suitable for kayak, SUP, shore, pier, dock, ice, and night fishing. No matter where the angler casts the line, this unit helps you find the fish faster than the traditional units.

Reelsonar Portable Fish Finder Accurate Fish Depth Finder

Moreover, it works best for night fishing as it has a built-in light. It comes with a green flashing light, making it more accessible to use at nighttime. The fish alarm makes it easier to catch the fish without wasting time. The alarm beeps on your smartphone when the fish is around your kayak, boat, or near you. So, the anglers easily know when the fish is biting.

It works best in all weather conditions and is suitable for both saltwater and fresh water. On the other hand, it offers easy usage and allows you to use it with a depth range of 135 feet. Download the app and connect it to your smartphone; you are ready to go. The app has an amazing and exciting feature. This unit has compatibility with Android devices and iOS.

Underwater images are captured by integrated sonar signals that detect static and moving objects. Icons are color-coded according to the depth and size of the fish. Besides, the battery timing is excellent; I used it for hours, and the battery dropped to 8%. But be careful while charging as the charging cradle is quite sensitive. There is a great chance of losing the pop.

This is the lightest weight fish finder on our list, and it weighs only 0.05 grams. The dimensions are L x W x H ‎2 x 2 x 1 inches, and it has a warranty of 1 year.


  • The mapping is easy to read
  • Best Budget Castable Fish Finder
  • Suitable for night fishing as it has a green flashing light
  • It has a built-in fish alarm  
  • The app has impressive features


  • The charging cradle is sensitive
  • Gives false readings if it’s not in water deeper than 6 feet

6-Deeper START Smart Fish Finder

The last castable fish finder on our list is also from a Deeper company. They produced the best and most innovative castable fish finders. This fish finder is suitable for casual, shore, and devoted anglers. It is ideal for fishing from the bank, shore, dock, and kayak. Further, the 40° sonar beam ensures the highest level of coverage and accuracy out to 165 feet.

Deeper START Smart Fish Finder

It offers easy and quick usage, so new anglers can use it without wasting time setting and setup. It is a wireless fish finder that works on battery. Besides, connect it to your smartphone through an app, and you are ready to go. It lets you locate the fish, size, depth, structure, vegetation, contour, and much more. This unit has compatibility with Android devices and iOS. Furthermore, you can download the app for free.

The best part is that it doesn’t drain your smartphone battery quickly as the other castable fish finders did. It is integrated with smart and cutting-edge technology that produces Wi-Fi and saves your mobile data. Plus, each scan is automatically saved with location and time, so you can reconsider it anytime.

This fish finder is suitable for night fishing as it got night fishing mode. The night fishing mode is so perfect that you don’t miss any casting chance. On the other hand, the battery timing is good, but it takes more time for recharging as compared to other Deepers’ castable fish finders. It takes 2.5 hours for 10% recharging.

It has a smart, sleek design and is lightweight at the same time. It weighs only 2.3 ounces/ 65 grams with dimensions of ‎ L x W x H 4.33 x 3.15 x 4.33 inches.


  • Suitable for the beginner
  • The price tag is moderate
  • Reasonable battery timing
  • Easy to operate
  • Graphics are clear


  • It takes time to connect

What Are The Advantages And Drawbacks Of Castable Fish Finder?

People often ask about the advantages and disadvantages of castable fish finders. So, I want to say that everything has pros and cons; nothing is 100% perfect. And the castable fish finder has some pros and cons as well.


  • They are easy to operate
  • These fish finders are easy to install
  • They enable the anglers to mount the transducers right on the side of your kayak.
  • You can scan directly through your smart devices.
  • They allow you to cast far
  • Castable fish finders are wireless, portable, and lightweight
  • They are versatile and allow you to cast from shore, bank, boat, and kayak.
  • They are suitable for freshwater and saltwater


  • Sometimes castable fish finders do not provide accurate information about the depth of the water, temperature, and structure.
  • They don’t work well in all weather conditions.
  • They are expensive compared to simple fish finders.
  • Sometimes they do not work in shallow water.
  • The app through which you can run the castable fish finder can drain your battery quickly.

Frequently Asked Questions:

  • What is the best castable fish sonar?

All the units mentioned above are reliable, with a few limitations that will bother the anglers. A deeper company produced the Best Castable Fish Finders. Deeper Chirp 2 Sonar Fish Finder is the finest unit.

  • How do castable fish finders work?

These types of fish finders are wireless and fixed on the fishing rod that rests on the top of the water. The castable fish finder uses Wi-Fi or Bluetooth to pair to an app on your smartphone, and they are ready to use. Usually, they have compatibility with iOS and Android devices.

  • Is Castable Sonar worth it?

Yes, they are worth buying, and according to my personal experience, the castable fish finders are more accurate and effective. The castable fish finders are not as sensitive as the kayak-mounted units are. On the other hand, they are more versatile.

  • What are the disadvantages of sonar fishing?

Sonar fishing has some drawbacks as well;

  • A sonar fish finder released sound waves that struck multiple fish.
  • Sound waves may threaten marine mammals.
  • The acoustic energy is diverted.
  • It produces much noise.

Does sonar work in deep water?

Sound waves are sent out, and the echo is measured. Sound waves will return faster to shallow water if reflected off the bottom. Further, when the water is deeper, it takes longer for the waves of sound to travel to the bottom and then return.

Final Verdict:

At last, we have reached the end of the article. We hope that you have got what you were searching for. We tried our best to bring you the best suitable options when it comes to the Best Castable Fish Finder.

According to our experience, the most suitable option is Deeper Chirp 2 Sonar Fish Finder. Then the runners-up are the Garmin Striker Cast and Castable Sonar Fish Finder. And in the end, the best budget-friendly fish finder, according to our experience, is Reelsonar Portable Fish Finder Accurate Fish Depth Finder.

About the author

My name is Camryn Riley and I am the Author/Owner of Fishing Products point. Fishing is my passion for the last 10 years. I always share my experiences with other people through this Blog. I always love to share my knowledge and experiences about the best fishing products.

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