iBobber 4+

ReelSonar, Inc.

    • 3.8 • 183 Ratings
    • Free


iBobber can now display fish detection and depth info on your Apple Watch!

Love at first cast. The fishfinder that 
syncs with your iPhone or iPad.

There’s a lot to love about iBobber™. It syncs via Bluetooth® Smart (Bluetooth Low Energy Technology) with your iOS device up to 100’ away from a boat, shore, kayak, or pier, so you have a fishfinder with a solid connection, that won't deplete your phone's battery like wi-fi does, a fishfinder that goes up to 8hrs on a charge, that's half the size and weight— a fishfinder that’s as mobile as you are.

The Bluetooth Smart standard is different from the Bluetooth® used in other fishfinders.
Bluetooth Smart is designed for short messages from nearby devices such as temperature sensors, proximity sensors, and medical devices such as heart monitors, and now sonar signals.

The iBobber app in conjunction with the iBobber bobber (sold separately) enables you to locate fish up to 135’ under water, GPS Tag favorite hotspots, map the contour o waterbeds, and measure water temperature.

You’ll love that you can save all your fishing adventures with the Trip Log, and share them all on social media. You’ll also love the Lunar Calendar, Fish Alarm, Strike Alarm, Bobber Beacon, Weather sync, and the app’s stunning graphics.

iBobber is for anyone who loves to find fish, and wants to catch more of them.
 Just cast the bobber (sold separately) and Ping! the iBobber app syncs via Bluetooth Smart and displays where the fish are.

The iBobber app is designed for one-handed use, and can help make fishing more fun 
than it's ever been. Even if you have a boat-mounted fishfinder, iBobber can free
 you from seeing fish only under your boat.  And finding more fish is always a lot
 more fun than just fishing!

iBobber App Features:

Sonar Screen

Locate Fish at Depths up to 135ft
Depth Scale
Fish Tagged with Depth

Sonar Status Dashboard

Battery Status (up to 8hrs of charge)
Water Temperature
Fish Alarm (on/off)
Strike Alarm (on/off/adjustable)
Bobber Beacon (on/off)

Trip Log

Just tap any GPS Tag button on any screen and the Date, Time, and Location of your trip auto-loads in Trip Log. Name your trip, then log conditions and the type of fishing. Log lures the fish are hitting on, and species of fish you've caught. Then share it all on social media with your friends who are stuck back in the office.

Location (GPS coordinates)
Type of Fishing
Fish Caught (type & number)

Share: Facebook, Twitter, Mail, Text

Waterbed Mapping

Map the contour of the bottom up to 100ft. Just cast, tap Begin, get ready 
to a count of 5, then reel the 
iBobber over the area to map, 
tap Stop, and have a look at the waterbed map, and see the contours of the bottom (up to
135' deep).

Lunar Calendar

Moonrise / moonset
Sunrise / sunset

The monthly lunar calendar will give you the moon phases by day and date. And you can also get the moon rise and set, and the sunrise and set— just tap today's date to see it.


iBobber weather is GPS based and provides current temperature, estimated high and low temperature for the day, the percentage chance of rain, wind speed and what direction it's blowing in from, as well as the barometric pressure.


Bluetooth Smart Sync
Imperial / Metric
Sonar Demo. And Waterbed Mapping speed adjustment.

Bobber Specs

Sonar Depth: Up to 135ft / 41m
Bluetooth® Smart Range: Up to 100 ft / 30m
Sonar: Single Beam, 90º, 118 kHz
Power: Auto-On in water
Units: Imperial / Metric
Battery: 3.7V Rechargeable
Battery Charge: Up to 8 hours
Size: 59mm Diameter
Weight: 47gm / 1.7oz

What’s New

Version 3.82

Improved handling of user login and use of Face ID.

Ratings and Reviews

3.8 out of 5
183 Ratings

183 Ratings

Marc515192 ,

It does its job

The iBobber does its job. I’ve found interesting features around my local fishing spot. The mapping feature works really well but the connection is often weak when using the sonar function. I suppose I don’t bring it back quick like when mapping. I still go 4 stars because I can see more from the shore now and move from bad spots and find better ones with cover.
I does the job. 1 suggestion for the fish alarm is “1 ping only please” until a new fish comes on the screen.

If you get my 1 ping reference I’ll go 5 stars.

Salty Dog ,

Easy to use

I fish from a fishing well which is basically a house out in the middle of the lake so my iBobber is never more than 25 feet from my iPhone. The connection has always been good and I have been very pleased with its performance. Battery life appears to be greater than the ten hours advertised on the box. However the iPhone blue tooth connection uses up lots of phone battery so I suggest having a way to charge your phone on extended trips. The iBobber ease of use is an important feature which allows me to fish without a lot of setup. I have a Garmin Striker 4 which really isn’t designed to be portable and requires a lot of setup whenever I go fishing. Fishing from a stationary location I have not had the need to test the mapping feature. Overall I recommend the iBobber

bcjmge ,

Completely fake

I have a pond at my house so I used it to setup there are no fish I know the depth and what the bottom looks like it it’s crystal clear and no rocks or plants or deep holes. So when I set it up it’s about 4-6 ft off when it reads depth I was also suprised to find out I have multiple ghost fish in my pond!! it says there are multiple fish under 15 in and 1 over 15 in it and I can clearly see no fish! It says I have 2 big ledges that go up 4ft but it’s a flat bottom it just makes up stuff and people that have no idea whats in the water at a lake or river with low visibility probably believe what they are seeing. That’s not cool! It’s completely wrong! Don’t buy it save some $ get a better setup!

App Privacy

The developer, ReelSonar, Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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