Data Security and Accessibility You Can Trust


  • Access all your scanning data on any Android or iOS device through the Fish Deeper App using your Deeper account details;
  • All your data is automatically saved and synced with our cloud server;
  • Log in to Lakebook™ to view your scans and bathymetric maps on any computer;
  • If you are a registered user, your data will be synced and accessible once your transition from the old Deeper App to the new Fish Deeper is complete.
  • If you are a first-time user, you will have to create a Deeper account.

Registration is required, so your app data is synced with our cloud server, viewed on multiple mobile devices and through the Lakebook™ platform.

Planning Made Simple

We understand that time is an important factor when it comes to planning your next fishing trip and enjoying it to the fullest. The Fish Deeper App includes features to help you plan your next great fishing trip effortlessly:

Benefit from the Detailed Display Layout

Depending on your fishing type, the app display shows the bathymetric maps and/or sonar scans. Anticipate any change in circumstances with display header showing time, water depth, temperature, sonar/phone battery levels, boat speed and notifications regarding your sonar connectivity.

Find the Best Location with Offline Maps

Download the maps of your region and plan the next trip in advance without any hassle. Use them as an orientation guide anytime, anywhere.

Take Advantage of the Real-time History

Scan the waters for as long as you want and if something catches your eye, just rewind the data while you are still scanning. No need to pause your scans anymore.

Control Your Scanning

From the moment you open the app, you can decide when you want to connect to your Deeper sonar, start a new fishing session, pause and resume it whenever you choose to get back to it.

Personalise Your Sonar Experience

Do you practise multiple types of fishing? Are weather/water conditions not as good as you expected them to be? No worries, you can now adjust your sonar settings depending on your fishing needs.

  • Fishing Type
  • Display Mode
  • Beam Angle
  • Display Sensitivity
  • Fish Icons
  • Colour Palette
  • Fishing Type

    Fishing Type

    Pick from 3 different modes: Standard, Boat and Onshore. Depending on the mode chosen, the sonar display/settings can range from very generic to much more detailed.

  • Display Mode

    Display Mode

    Customise your sonar scanning qualities: select whether you want your display to be Basic (only with vegetation and water depth, like in the Deeper Start) or Raw with very detailed and crisp quality imagery.

  • Beam Angle

    Beam Angle

    Pick a beam angle from Narrow or Wide (also Mid for CHIRP+). This helps you distinguish how big of an area and how detailed you want the scanning to be.

  • Display Sensitivity

    Display Sensitivity

    Depending on water depth, clarity and bottom structure, you can adjust the sensitivity. Use low sensitivity for dirty water and high for clear water.

  • Fish Icons

    Fish Icons

    The function allows you to show fish icons on the screen, adjust their size, indicate how deep they are located and switch on/off the fish alarm.

  • Colour Palette

    Colour Palette

    Depending on the time of the day and your fishing conditions, choose the colour palette that would best display your sonar settings. Turn on the night fishing feature to help you see the sonar more clearly in the dark (when used together with the Deeper Night Fishing Cover).

Lakebook™ - Fishing Maps at Your Fingertips


Every sonar scan and bathymetric map you create with your Deeper CHIRP+ and PRO series using the Fish Deeper App, available in one place with Lakebook™, your personal journal for better fishing.

Explore Lakebook

Global Compatibility

The Fish Deeper App is compatible with more than 9,800 smart devices that use either Android or iOS operating systems. Google Play and the App Store will tell you if your device is compatible – just follow the links below to check. The app is available in multiple languages (BG, CZ, DE, EE, EN, ES, FI, FR, HR, HU, IT, JA, KO, LT, LV, NL, NO, PL, RO, RU, SV, UA) and works in any region. Created by anglers for anglers. Download the Fish Deeper App today and discover why.

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