Best Fish Finder Under $100 in 2023: Buyers Guide

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If you’re an angler on a budget, finding the best fish finder under $100 can be a game-changer. A fish finder can help you locate fish faster and more accurately, giving you a better chance of making a catch.

In this article, we’ll take a look at some of the top fish finders available for under $100, evaluating their features and capabilities so you can make an informed decision. From portable handheld units to castable fish finders, we’ll explore a range of options to suit your fishing style and budget. Whether you’re a beginner or an experienced angler, choosing the right fish finder can take your fishing experience to the next level. So, let’s dive in and discover the best fish finder options on the market.

Top Rated Fish Finders Under $100

Why You Need a Fish Finder?

A fish finder is a valuable tool for any angler, whether you’re a beginner or an experienced fisherman. Here are some reasons why you need a fish finder:

  • It helps you locate fish in the water, making fishing more efficient.
  • It helps you find the right depth to fish at, increasing your chances of catching fish.
  • It can help you identify underwater structures where fish might be hiding.
  • It can give you an idea of the size and type of fish in the area.

How to Choose the Best Fish Finder Under $100?

When shopping for a fish finder under $100, there are a few things you need to consider:

Screen Size

The screen size is an important consideration when choosing a fish finder, as it determines how easy it will be to read the data. A larger screen will make it easier to see the information displayed, but it will also make the unit larger and potentially more difficult to transport. Consider the size of your boat or kayak and how much space you have available when selecting the screen size.

Display Quality

The display quality is also important. A fish finder with a color display will be easier to read than one with a black and white display. Look for a unit with a high-resolution display, as this will provide a clearer picture of the underwater environment. Also, consider the brightness of the display and whether it can be adjusted for use in different lighting conditions.


The transducer is the part of the fish finder that sends and receives sonar signals. Look for a fish finder with a transducer that is compatible with your boat or kayak. Most transducers are mounted on the hull or transom of the boat and require drilling to install, so make sure you have the necessary tools and skills to do this if you choose a unit that requires it. Also, consider the frequency of the transducer, as a higher frequency will provide better detail and accuracy but may have a shorter range.

Depth Range

The depth range of a fish finder is an important consideration, as it will determine the maximum depth at which it can detect fish and underwater structures. If you plan on fishing in shallow water, a fish finder with a depth range of 100-200 feet should be sufficient. However, if you plan on fishing in deeper water, look for a unit with a depth range of 500 feet or more.

Power Source

Fish finders typically run on batteries, so make sure you choose one with a long battery life. Consider whether you want a rechargeable or replaceable battery. Rechargeable batteries can be more convenient, but if they run out of power during a fishing trip, you’ll have to wait until they recharge. Replaceable batteries can be swapped out easily, but you’ll need to carry spares with you.


If you plan on using the fish finder on multiple boats or kayaks, look for one that is portable and easy to move around. Some units come with a carrying case or bag, which makes it easier to transport. Also, consider the weight of the unit, as a heavier unit may be more difficult to carry around.


Some fish finders come with GPS functionality, which can be useful for marking fishing spots or navigating unfamiliar waters. If this is important to you, look for a fish finder with built-in GPS. However, keep in mind that units with GPS tend to be more expensive than those without.


Finally, consider the price. Fish finders under $100 are available, but they may not have all the features you need. Consider the balance between price and features to get the best value for your money. Read reviews from other users and compare features before making a purchase.

Best Fish Finders Under $100: Reviews & Recommendations

Here are the top 6 fish finders under $100 available in the market today:


1. Humminbird PIRANHAMAX 4

Price: $107.00
Humminbird PIRANHAMAX 4

If you’re an avid angler, the Humminbird PiranhaMAX Series is a must-have in your fishing gear collection. The PiranhaMAX 4, in particular, is a game-changer. With its modern styling and larger 4.3″ color LCD, you’ll get a fresh perspective on what’s below your boat.

Are you tired of struggling to find fish? With the PiranhaMAX 4, you can easily find and catch more fish, no matter where they hide. Its redesigned interface makes Fish ID+, fish alarms, depth alarms, and zoom even easier to use.

Do you want a fish finder that packs a technological chomp? The PiranhaMAX 4 offers feature-for-feature excellence that no other fish finder in its class can match. It includes a fish finder, tilt and swivel mount, gimbal mounting bracket, 6-foot power cable, XNT 9 28 T transducer, and mounting hardware.

With the Dual Beam Sonar, you can see what you want. Choose from a narrow beam for great detail or a wide beam for generous coverage, helping you identify fish, structure, and contours. And with the included tilt and swivel mount, you can quickly adjust your viewing angle for even better visibility.

Overall, the Humminbird PiranhaMAX 4 is an excellent investment for any angler who wants to catch more fish. Its portability, easy-to-use features, and technological superiority make it a top contender in its class.

Read more: Fish Finder Under $1000


2. Lowrance HOOK2 Fish Finder

Price: $95.00
Lowrance HOOK2 Fish Finder

If you’re a fishing enthusiast, you’ll love the Lowrance HOOK2 Fish Finder. This device is perfect for those who want to spend more time fishing and less time fiddling with settings. With auto-tuning sonar and phone-like menus, you’ll be able to focus on catching fish rather than fumbling with controls.

The HOOK2 4x offers a wide-angle sonar cone that provides double the coverage of traditional fish finders. Plus, you can mount the single transducer on the transom, inside the hull, on the trolling motor, or through a scupper hole, making it incredibly versatile. The included Bullet Skimmer transducer gives you traditional 2-D sonar views, complete with fish arches.

Thanks to the high-resolution Solarmax display, you’ll get crisp and clear views of fish and fish-holding structures, even in bright daylight. And with HOOK2 Autotuning sonar, you won’t have to spend time adjusting the settings. Simply plug it in and start fishing.

Overall, this is one of the best fish finder that is durable and user-friendly. Finding depth changes, roadbeds, and your favorite fishing spots is a breeze with the built-in, high-detail U.S. map in HOOK2, which features 1-foot contours or more than 3,000 lakes. And if you want to save your routes, waypoints, and trails, you can do so with a microSD card or upgrade your mapping with an optional chart card.

Read next: Best Fishing Reel Oil


3. FishPod 5X Bluetooth Fish Finder

Price: $89.99
FishPod 5X Bluetooth Fish Finder

If you’re a fishing enthusiast, you know how important it is to have the right equipment for a successful fishing trip. That’s why you need to check out the FishPod 5X Bluetooth Fish Finder.

Have you been looking for a fish finder that can help you evolve your fishing game? Look no further than the FishPod 5X Bluetooth Fish Finder. It comes with four preset operating modes, which means you can auto-adjust screen settings to target fish by size, depth, or schooling.

One of the best features of this fish finder is the FishEcho technology that tunes sonar in the water column to pinpoint the size and depth of fish while tuning out clutter, debris, and false echoes. It provides accurate readings so you can make informed decisions about where to cast your line.

The TraxNut mounting system allows attachment to any 1/4 x 20 mounting bracket and expandability to any fishing platform. You can easily mount it on your kayak, boat, or any other fishing platform. Additionally, the BottomScan feature adjusts bottom contour and composition readings to decipher between vegetation and soft/hard seabed, and the Vertical Flasher amplifies the most recently received sonar echoes, making them easier to track. It’s especially great for ice fishing!

Know more: Best Fish Stringer


4. Deeper START Smart Fish Finder

Price: $98.99
Deeper START Smart Fish Finder

Are you an angler who loves to go on family trips or shore fishing? If you’re looking for a reliable and efficient fish finder, the Deeper START Fish Finder is an excellent choice. With its lightweight and sleek design, you can seamlessly reel in your catch without any messy wires or external batteries.

This fish finder is equipped with innovative and cutting-edge technology that generates its own Wi-Fi. You won’t have to worry about eating up your mobile data, and every scan is automatically saved with time and location for easy revisits. You can take advantage of its smart technology and make the most out of your fishing trips.

What’s great about the Deeper START Fish Finder is its simplicity and effectiveness. You can be fishing in minutes by simply pairing it with the Fish Deeper app on your mobile device. The app displays useful data such as fish location and size, depth, bottom contour, vegetation, and more. It’s free to download and compatible with iOS and Android devices.

The Deeper START Fish Finder also boasts impressive specs that make it a valuable fishing gear and equipment. It can cast far out to 165ft and also deep down to 165ft with a 40° sonar beam for ultimate accuracy and coverage. Additionally, it has a night fishing mode that allows you to fish longer, and its battery life lasts up to 6 hours after just 2.5 hours of charging.

To knw more: Best Bottom Fishing Reel


5. Reelsonar Portable Fish Finder

Price: $89.99
Reelsonar Portable Fish Finder

Are you an avid angler searching for an easy-to-use portable fish finder that can help you locate fish in both freshwater and saltwater? Look no further than the Reelsonar Portable Fish Finder. This Bluetooth-enabled device comes with a rechargeable battery that provides over 10 hours of battery life, making it perfect for all-day fishing trips.

One of the best features of this fish finder is its depth range of 135 feet, which allows you to find fish in deep waters. Additionally, the sonar signals integrated into this device enable you to see both static and moving objects under the water’s surface, making it easier to locate fish. Moreover, the depth-tagged fish icons are color-coded by size, allowing you to quickly identify the size of the fish you’re looking at.

The iBobber’s fishfinder feature comes with a fish alarm that alerts you when fish are congregating under docks and piers. Additionally, the strike alert feature lets you know when fish are biting, so you can be sure to set the hook at the right time. The device’s app is available on both IOS and Android, making it easy to use with your smartphone.

Finally, if you’re looking for a great gift for your husband, father, friends, or any angler, the Reelsonar Portable Fish Finder is now better than ever. With its easy-to-use design and impressive features, it’s sure to be a hit with any fishing enthusiast.

>> Fish Finder Under $500


6. LUCKY Portable Fish Finder

Price: $82.89
LUCKY Portable Fish Finder

If you’re looking for a reliable and efficient way to improve your fishing game, Lucky portable fish finder is an excellent option to consider. With its updated 2.4inch TFT color LCD screen, this fish depth finder can easily detect and display underwater contour, water depth, water temperature, and fish size and depth.

This fish depth finder offers two user modes: TRANSDUCER, which allows you to test all the functions in simulation mode and go fishing in transducer mode. You can use this portable fish finder to detect fish in various fishing areas such as ice fishing, river fishing, sea fishing, shore fishing, and kayak fishing, making it a versatile tool for fishing enthusiasts.

The Lucky fish finder portable is rechargeable, and it comes with a USB cable for charging. You can use this device continuously for about 5 hours with a full charge. Additionally, the brightness of the display can be adjusted, which allows you to read the data easily at night or in the sunlight.

This portable fish finder also comes with various features settings such as sensitivity, screen brightness, depth range, zoom, depth alarm, fish alarm, fish icon, units (FT/M ℃/℉) alter, and language by yourself. The updated underwater contour display with three kinds of displays provides a clearer and professional view. Moreover, the bracket allows you to attach the sensor transducer to your boat or kayak, making it easy to move around while fishing.

To know more: Fish Finder Under $300


What is a fish finder, and how does it work?

A fish finder is a device that uses sonar technology to detect fish in the water. The device sends sound waves into the water, and when the waves hit an object, they bounce back to the fish finder. The fish finder then uses this information to create an image of the objects underwater, including fish, rocks, and other structures.

What is the difference between a fish finder and a depth finder?

A fish finder and a depth finder are two different devices, although they both use sonar technology. A fish finder is designed specifically to detect fish in the water, while a depth finder is used to measure the depth of the water.

Can you use a fish finder in saltwater?

Yes, fish finders can be used in saltwater. However, it’s important to choose a fish finder that is specifically designed for saltwater use, as the salt content of the water can affect the performance of the device.

How do you install a fish finder on a boat?

Installing a fish finder on a boat can be a straightforward process, but it’s important to follow the manufacturer’s instructions carefully. In general, you will need to mount the transducer (the part of the fish finder that sends and receives sonar signals) on the bottom of the boat and connect it to the display unit. You will also need to connect the display unit to the boat’s power source.

Do all fish finders come with GPS?

No, not all fish finders come with GPS. However, many of the higher-end models do include GPS, which can be a useful feature for navigating on the water and marking fishing spots. When choosing a fish finder, consider whether or not you need GPS and how much you are willing to spend on the device.

Final words

In conclusion, finding the right fish finder under $100 doesn’t have to be a difficult task. By considering the features and specifications that matter the most to you, you can easily find a fish finder that will meet your needs without breaking the bank. Our top six picks are all excellent options that will help you locate fish and improve your chances of catching more.

Whether you are an experienced angler or just starting out, a good fish finder can make all the difference. With the right tool in your hands, you can save time, increase your catch rate, and have more fun out on the water. So, take a closer look at our top picks and choose the fish finder that’s right for you. With any of these great options, you’ll be well on your way to a successful day of fishing!

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