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Best Fish Finder Under 100

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Manufacturers are constantly working on improving fish finder technologies. Due to this, even affordable fish finders under 100 dollars have considerably improved in recent years. You might not get all the bells and whistles that come with high end fish finders, but you will get a unit that will definitely make your fishing experience more effective and more fun. That’s why in today’s article we’ll look at the top products on the market right now in order to help you find the best fish finder under 100.

Top 6 Fish Finders Under 100

comparison of fish finders under 100
  • ReelSonar iBobber
  • Display: -
  • Sonar: sonar identifier technology
  • Max depth: 135 ft
  • Power: rechargeable battery
cheap fish finders
  • HawkEye Fishtrax 1C
  • Display: 2"
  • Sonar: dual 83/200kHz frequency
  • Max depth: 240 ft
  • Power: 4 AAA batteries
best fish finder under 100 dollars
  • Lucky FFC1108-1
  • Display: 2"
  • Sonar: single 200kHz frequency
  • Max depth: 328 ft
  • Power: 4 AAA batteries
most affordable fish finders
  • Venterior VT-FF001
  • Display: 2"
  • Sonar: Single 200kHz frequency
  • Max depth: 328 ft
  • Power: 4 AAA batteries
budget friendly fish finders
  • Lucky FF1108
  • Display: 2.4"
  • Sonar: Single 125kHz frequency
  • Max depth: 147 ft
  • Power: 4 AAA batteries
cheapest fish finders
  • Ricank Fish Finder
  • Display: 2"
  • Sonar: Single 200kHz frequency
  • Max depth: 328 ft
  • Power: 4 AAA batteries

Lucky FFC1108-1

best fish finder under 100 dollarsOne of the top selling fish finders in the under 100 price range is the Lucky FFC1108-1. It’s a portable fish finder that is perfect for beginner anglers and those shopping on a budget.

This versatile unit is suitable for different types of fishing. You can use it when fishing from shore, from a kayak and for ice fishing. It doesn’t require any installation, so you can also use it between different boats.

The fish finder comes with a small 2 inch LCD display. It might be too small to read from a distance but it’s perfect for smaller boats and kayaks. The screen also features anti-glare and LED backlighting. It makes it easy to read the screen no matter the light conditions.

On the screen, you can view sonar returns. It displays the composition of the bottom contour, fish and their depth. In addition to sonar information, you can also find on the screen different settings of this fish finder, such as sensitivity indicator, alarms, water depth, backlighting and battery saving mode.

The unit’s transducer operates at a single 200kHz frequency. This produces a conical beam with a coverage of 45 degrees. Due to this, the fish finder can scan broad areas but not in very deep waters. It performs the best in depth range between 3 and 328 feet.

There are also five settings of sensitivity. You can adjust it to get the most accurate returns for the particular fishing situation you have. Other sonar features include fish and fish school alarm. You can set it for the unit to notify you if it marks a school of fish passing through the sonar beam.

This unit is powered by 4 AAA batteries, which offer about 4 to 5 hours of continuous operation. It can also be longer if you’re using the battery saving mode. But if you’re going on long fishing trips, you can always have a spare set of batteries with you, which would ensure that you’ll have enough charge for the whole duration of your trip.

In the package, this fish finder includes a display, a transducer with a removable float and 25 feet of cable. If you’re using it as a castable unit or if you’re ice fishing, you can keep the float on. But if you’re trolling it behind your kayak or if you install it to the hull of your boat, you can remove the float.


  • Compact unit.
  • Single frequency.
  • 5 sensitivity settings.
  • Maximum depth is 328 feet.
  • Suitable for a variety of fishing environments.
  • Batteries support 4-5 hours of continuous operation.
  • Battery saving mode.
  • 1 year warranty.
  • Small display.
  • Requires disposable batteries for operation.

ReelSonar iBobber

comparison of fish finders under 100Another great portable fish finder under 100 is the ReelSonar iBobber. It’s so small that it offers the convenience of being able to bring it with you wherever you fish. It can fit in the palm of your hand or in your pocket, offering easy portability.

One of the differences between this unit and the previous is that it doesn’t come with a display and only includes the sonar unit. This fish finder is designed to be paired with your smartphone. This means that you can choose to have a smaller screen with a small phone or a bigger screen with a tablet.

The sonar unit syncs with your phone using a Bluetooth connection. It keeps the connection between the two devices with a distance up to 100 feet.

Once you’ve synced the sonar device with your smartphone, you can view all the sonar returns in a free app. The fish finder uses patented fish identifier technology, which provides accurate sonar readings of depths from 3 feet down to 135 feet. It’s very effective at locating fish and identifying bottom structures.

In addition to sonar information, the app also offers plenty of other features. For one, it has GPS functions. It offers an interactive map where you can tag your fishing spots. It also allows you to create contoured maps of the waterbed and structure.

Another feature of the app is trip logging, where you can save all the information related to your fishing trip. It can include location, time, water conditions, weather, lure used and fish caught.

The unit includes a rechargeable battery and a charger. This means that you don’t need to worry about buying new batteries and polluting the environment with them. And this unit also has a good battery life that can last about 10 hours.

This fish finder is suitable for different applications. You can use it as a castable fish finder from shore or dock, as an ice fishing unit or when fishing from a small boat or kayak. However, it doesn’t work as well when trolling it behind a kayak or boat. In this application, it tends to lose connection or provide inaccurate returns. The same thing happens when the water is a bit choppy.


  • Small and portable.
  • Syncs with a smartphone.
  • Uses patented fish identifier technology.
  • Scans down to 135 feet.
  • GPS spot tagging.
  • Trip logging.
  • Contour mapping.
  • Fish and striker alarms.
  • Rechargeable battery.
  • Not very good for trolling.

HawkEye Fishtrax 1C

cheap fish findersHawkEye Fishtrax 1C also makes a good cheap fish finder. It’s a portable fish finder that is a good choice for both beginners and experienced anglers.

The fish finder features a small HD color display. It’s big enough to display all the important sonar information, such as bottom structure, fish arches and depths. Its size is also perfect for portable use since you can easily hold it in your hand.

This device also offers intelligent sonar that uses dual 83/200kHz frequency operation. This allows you to choose between a wide 26 degree angle and a narrow 14 degree angle. Switching between the two, you can adapt the fish finder to your fishing in either shallow or deep water.

You can fine tune the fish finder even further. It offers sensitivity settings, different levels of depth ranges and an auto-zoom feature that automatically focuses on the bottom of the lakebed.

It’s also a multi-mode fish finder. There are three functional modes, which include fish finder, data and ice flasher. The fish finder mode shows the general sonar information, such as the presence of fish, bottom composition and the overall depth of the water.

In the data mode, the fish finder enlarges depth, temperature and battery voltage readings. This can be handy when you need to view this information from a distance.

Lastly, the ice flasher mode displays the sonar echoes on a traditional flasher. It can be used for targeting fish when ice fishing or when fishing from a stationary position. It shows you what’s happening right under you in the water at that moment, giving you real time sonar returns.

To help you target more fish, there are also fish and depth alarms. You can set it to send you an audible alarm when the sonar marks a fish or when it detects that you’ve reached a certain depth.

There are also different ways of using this cheap fish finder. It can be mounted, trollable and floatable. This means that you can use it for almost any fishing style.


  • HD color display.
  • Compact.
  • Dual frequency sonar.
  • Maximum depth up to 240 feet.
  • Sensitivity settings, depth ranges and auto-zoom.
  • Ice flasher mode.
  • Data mode.
  • Fish and depth alarms.
  • Small screen.
  • Uses disposable batteries.

Venterior VT-FF001

most affordable fish findersThe Venterior VT-FF001 is one of the cheapest fish finders you can find. However, for the price, it also offers great features and quality that can benefit a beginner angler.

With the fish finder, you get a small display unit with an LCD screen. It’s ultralight and compact. And it can comfortably fit in your hand, so instead of mounting it you can use it as a handheld unit.

Its sonar uses a single frequency that is 200kHz. This allows it to scan an area with a beam cone angle that is 45 degrees wide. This means that it can scan a large area but not very deep. Its maximum depth capability is 328 feet. It also works well in shallow waters that are 3 feet and deeper.

Sonar returns display on the screen basic sonar information. It shows the bottom structure, the presence of fish and at what depth they are located. The displayed bottom structure can include weeds, sand and rocks.

You can also fine tune the fish finder to your fishing needs. For example, there are five sensitivity settings, so if you want to target only bigger fish, you can lower the sensitivity.

As for power, the device uses 4 AAA batteries. A single set of batteries lasts about 4 to 5 hours of continuous use, which is usually enough for a day of fishing. And if it’s not enough, you can always bring a spare set with you.

This fish finder is very easy to use. Using a pole, just toss in the transducer into the water and it will provide you with water depth and fish depth readings. You can also use the fish finder from a kayak by attaching it to the boat’s hull, trolling it behind or by using a mounting arm.


  • Simple display.
  • Versatile use.
  • Single frequency.
  • Scans a wide area.
  • Maximum depth up to 328 feet.
  • Fish alarm.
  • 5 sensitivity settings.
  • 2 year warranty.
  • Small screen.
  • The screen is not full color.

Lucky FF1108

budget friendly fish findersThere’s one more good fish finder from the Lucky brand. The Lucky FF1108 is also a compact and portable unit that offers good sonar performance for an affordable price.

This fish finder comes with a 2.4 inch TFT display. It’s a color display, which makes it easier to differentiate between the objects you see on the screen.

It also comes with a wireless sonar transducer, which means that you don’t need to worry about any cables. And you can use this transducer in many different ways. You can attach it to a fishing line and cast it out with a pole. You can also attach it to the boat’s hull using the built-in mounting tabs. Alternatively, you can just toss it out of kayak and troll it as you paddle through a river or lake.

The transducer operates at 125kHz frequency. It’s a single frequency transducer, so it produces only one beam that offers 90 degree coverage. That is the widest single beam scan coverage that you can find on a fish finder. However, this also means that you get detailed results only in shallow waters. Its scan can reach depths only up to 147 feet, which should be enough if you’re fishing in shallow lakes and rivers.

Sonar returns display on the screen bottom contours, fish icons and their depth. It also shows relative sizes of the fish, though not their actual sizes. It can identify fish as either small, medium or large.

The fish finder also allows you to adjust the sonar to your fishing style. It offers 10 sensitivity settings that you can adjust to your needs. For example, if you want to see maximum detail, you can set it to the highest setting.

Both the display and the sonar unit are powered by lithium batteries. The display unit can operate for about 10 hours on a single charge and the sonar sensor can operate about 4 hours. And the batteries are rechargeable, so you don’t need to replace them.

One of the downsides of this fish finder is that the display is not waterproof. So, while the sonar unit can be submerged in water, the display should stay dry.


  • 2.4 inch color display.
  • Multi-use transducer.
  • Wireless sonar unit.
  • Single frequency sonar.
  • Wide beam angle.
  • Scans depths up to 147 feet.
  • 10 sensitivity settings.
  • Fish alarm.
  • Both the handheld and the sonar unit are rechargeable.
  • The display is not waterproof.

Ricank Fish Finder

cheapest fish findersThe last inexpensive fish finder that is under 100 we’d like to recommend is the Ricank model. It’s a portable unit with versatile use. It can be used for offshore, kayak, shore and dock fishing.

This device features a small black and white display. Though it lacks the color, it still provides good readings of all the sonar information. It clearly displays bottom structure, fish and depth.

The fish finder also comes with a sonar sensor, removable float and 25 foot cable. This allows using the unit for shore or river fishing. It also comes with a side scan adapter that you can use for mounting the transducer to a kayak’s hull. However, if you’ll be using this fish finder on a kayak or boat, keep in mind that it might start to lose some accuracy with speed. For best sonar returns, it’s better to keep the speed under 5 mph.

The sonar uses a 200kHz frequency, sending a 45 degree cone underwater. And it can scan depths from 3 to 328 feet. It can detect fish and its size, depth and bottom structure, including weeds, sand and rocks.

Depending on if you want more or less detail, you can adjust the 5 sensitivity settings. If you want less clutter and bigger fish displayed on the screen, lower the setting. And if you want to see maximum sonar detail, set the sensitivity higher.


  • Suitable for various fishing styles.
  • Uses 200kHz frequency.
  • Depth range is between 3 and 328 feet.
  • 5 sensitivity settings.
  • Fish alarm.
  • Includes a side scan adapter.
  • Battery saving mode.
  • The screen is not waterproof.
  • It is not very accurate in choppy water conditions.
  • Black and white screen.

Final Thoughts

As you can see, even at a price below $100 you can find a good fish finder. Of course, you won’t get with them the most advanced sonar features. However, they do come with features that will help you detect more fish, making your fishing trips more fun. In our opinion, the Lucky FFC1108-1 is the best fish finder under 100 since it’s well designed and it offers highly accurate sonar returns.

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