The Lakebook Deeper Data Manager comes under the beady eye of Angler's Mail tackle editor Richard Howard. He's the No.1 products inspector, checking out loads of quality kit every week.

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FANS of the very clever Deeper gizmo for mapping fisheries and fish-finding will be interested to hear that there’s now a Deeper Data Manager, called Lakebook.

It’s a web portal for viewing, analysing and printing maps created using a Deeper device.

So you can now go better armed for your next session with all of the maps that you’ve made available to view on your home computer.

Lakebook has the tools for precise depth readings and distances, to pinpoint those hotspots.

You’re also able to download the raw data such as the depths and GPS co-ordinates, should you want to use it with other software.

And because your fishery maps are automatically transferred from the mobile app, you don’t lose your data if you lose your phone.

Price: free (www.deepersonar.com).