i-Boating:Marine Navigation

Review by eFreeware

Most navigation apps treat water as an afterthought. i-Boating does the opposite: it is built around charts, and the developer's pitch is that it works like a chartplotter rather than a map with a boat icon on it. That distinction is the whole reason to consider it, because it shapes everything else in the app.

The people this makes sense for are boaters and anglers who plan and follow routes on lakes, rivers and coastal water, and who want depth, tides and currents in the same place as the course line. If you already run a dedicated chartplotter, this is more of a companion; if you do not, it is an attempt to put that kind of tool on the device you already carry.

It has been on Google Play since 2015, which is a long run for a navigation app, and it sits at a 4.2 average across 13,047 ratings with more than a million installs. That is a healthy base for a niche tool, and it suggests the chart data has kept enough people coming back.

Charts that keep working without a signal

The core of the app is offline vector charts, drawn with GPU acceleration so that labels stay upright as you rotate the view. That detail matters more than it sounds: on a moving boat, text that flips with the chart is hard to read, and keeping it level is the sort of thing you only notice when it is missing.

Coverage is broad. For the United States the developer lists NOAA marine charts and ENC coverage, USACE inland river maps, and freshwater lake bathymetry for more than 75,000 lakes, including HD one-foot and three-foot contours on selected lakes. Outside the US there are Canadian CHS charts covering the Great Lakes and a long list of Ontario, Alberta and Quebec waters, UKHO charts for the UK and Ireland, BSH data for Germany, and charts for France, the Netherlands, Croatia, Finland, Norway, Sweden, Spain, Italy, Greece, Turkey, Australia, New Zealand, Brazil, Argentina, Iceland, Malta, Cyprus and parts of the Caribbean, the Gulf, the Red Sea and southern Africa.

Charts are quilted together, so coastal, approach, harbor and inland electronic charts sit in one continuous view rather than forcing you to switch between separate products. Inland river coverage extends to the Danube, the Rhine and Russian rivers such as the Volga, which is unusual for an app that also handles saltwater.

Routing with a voice in your ear

The feature the developer leads with is route assistance with voice prompts, and it is the part that separates this from a static chart viewer. You build a route or a set of waypoints, and the app calls out approaching markers, gives real-time distance and ETA, and warns when you drift off the route or head the wrong way.

Routes can be created, edited and reversed in the app, or imported from GPX, KML and KMZ files you already have. Export and sharing work the same way, so a route planned at home can move to another device or to someone else's. Autofollow keeps the boat centered on the route with a live track overlay and a predicted path vector, and tracks can be recorded as you go.

Course-up orientation, true or magnetic bearing, and speed and heading readouts round out the navigation display. There is also an anchor alarm, which is a small addition that could be useful on an overnight stop.

Depth, tides and weather for trip planning

For anyone fishing, the depth tools are the draw. Custom safety depth shading lets you set a threshold and see where the bottom drops away, and relief shading gives the contours a sense of shape rather than flat lines. HD one-foot and three-foot lake contour maps are available for selected lakes, aimed at trolling and freshwater or saltwater fishing.

The app also includes a Fishing AI feature for hot spots and lake temperature maps showing thermoclines at roughly half-degree Celsius resolution. Treat the AI label as a marketing term rather than a promise, but the underlying idea, matching depth and temperature to where fish are likely to hold, is a reasonable one for anglers who already think that way.

Tides and currents get their own treatment, with high and low tide predictions and tidal current forecasting, plus UK tide and current data. Marine weather comes from GFS and ECMWF models, with wind, wave and wind prediction overlays. Together these are the pieces you would otherwise gather from three or four separate sources before a trip.

Instruments and connected hardware

i-Boating supports Marine AIS and NMEA data over TCP or UDP, which means it can take feeds from AIS and GPS equipment rather than relying only on the device's own sensors. Wind direction and speed, sonar depth and water temperature can be shown as instruments when that data is available.

There is an autopilot entry and NMEA alarms in the recent update list, along with automatic boat routing. If your setup already produces NMEA output, this is where the app stops being a chart viewer and starts behaving like part of a helm station. If it does not, those features simply sit unused.

Other recent additions include satellite imagery, a public and private land ownership overlay with parcel maps, cloud sync for keeping data consistent across devices, and the ability to magnify text and icons. The magnify option is a small but welcome touch for anyone reading a chart on a phone in bright light.

What it asks of you

The app is free to download and carries no ads, but it does offer in-app purchases, and the chart licensing model is the thing to understand before you commit.

The hardware side is worth weighing too. AIS, NMEA and the instrument readouts depend on equipment that produces that data, and features like the anchor alarm and autofollow assume the device has a reliable GPS fix and enough battery to run a screen for the length of a trip. None of that is unusual for marine navigation, but it is the difference between reading about the app and using it on the water.

The chart catalog is deep but uneven by region. Some areas get detailed bathymetry and HD contours; others get coastal coverage without the lake-level detail. Checking the specific waters you sail or fish before buying anything is the sensible first step, and the developer's own list of covered lakes and coasts is the place to do it.

Getting the most from it before you launch

Plan on land. Build your routes and waypoints at home, import any GPX, KML or KMZ files you already have, and check that the chart for your area is the level of detail you expected. Doing this in advance means the first time you use the app on the water you are following a route rather than assembling one.

Set your safety depth early and leave it. Custom depth shading is only useful if the threshold reflects your boat's draft, and adjusting it mid-trip is a distraction. The same goes for course-up versus north-up orientation: pick the one that matches how you navigate and keep it consistent.

Download or confirm your charts before leaving coverage, since the vector charts are designed to work offline. If you run AIS or NMEA instruments, test the TCP or UDP connection at the dock rather than discovering a problem in open water. And if you fish a specific lake regularly, spend a few sessions with the temperature and depth layers before trusting the hot spot suggestions.

A chartplotter companion for boaters and anglers

i-Boating is a serious attempt to put chartplotter-style navigation on a phone or tablet, and for the right user the combination of offline vector charts, lake depth contours, tides, currents, weather and voice-guided routing is genuinely hard to assemble elsewhere in one app. The breadth of regional coverage is the strongest argument in its favor.

It is not a casual app. The value sits in the chart data and the routing tools, and you get the most from it if you boat or fish regularly on covered water and are willing to plan ahead. Someone who wants a simple map to glance at occasionally will find far more here than they need.

My recommendation is to check the coverage list for your specific lakes and coastline first, then decide whether the one-year update window and in-app purchases fit how you use charts. For boaters and anglers who want depth, tide and route guidance in one place, it is a reasonable install; for everyone else, the free download is a low-risk way to see whether the charts for your area are as detailed as you need.

What's new in version 296.0

Vietnam Public+Private Lands Highlight Fishing Depth Range RELIEF SHADING Lake Temperature Marine Weather Forecast Fishing AI NMEA ALARMS Marine Weather:Wind,Wave Automatic Boat Routing UK Tide & Currents Magnetic Bearing Wind Prediction Overlay Magnify Text+Icons Anchor alarm Auto Pilot Custom depth shading Satellite imagery AIS &GPS NMEA TCP/UDP Russian rivers(Volga) Wind speed,direction,sonar depth,water temp Norway,Finland,Denmark German(Donau,Elbe,Mosel,Rhein,Saar,Weser) Elbe,Ruhr