Made for Inland Waters

Rivers & Seas provides special functions for inland navigation

Detailed maps

Rivers, lakes and waterways with buoys, bridges and anchorages

Bridge Clearance

Lists headroom of bridges ahead, gives a warning if bridge is too low

Lock Informationen

Shows phone number, VHF and opening times when approaching a lock

Speed Limits

Displays speed limits in current stretch of waterway

Distance and Travel Time

Calculates distance and travel time to bookmarks, locks and bridges

Offline Maps

Allows download of individual map areas for usage without internet on the water

Plan Your Trip

The planning tool is made for meandering rivers, waterways and lakes chains. Simply draw a track with your finger easily, Rivers & Seas will calculate the length and travel time. On your way a red line in the map will guide you.

  • Planning legs and travel times
  • Mark destinations with bookmarks
  • Easily note route recommendations
  • Download planned routes as offline maps

Ich benutzte eure Software seit über zwei Jahren und befahrenen 2.500 km Wasserstraßen. Nachdem ich viele Jahre Laptop-Software für ca.300 € genutzt habe, fiel mir Rivers & Seas in die Hände. Voller Hoffnung, weil es meiner Meinung nach das einzige Programm/die einzige App ist die mit Höhenangaben an jedem Hindernis aufwartet. Das hätte ich bei diesem geringen Preis nicht erwartet.

Peter T.

Nach 500 Kilometern aus dem Ruhrgebiet bis vor die Schleuse Wusterwitz: Den gesamten Weg habe ich mit Rivers & Seas navigiert. Und es ist einfach ein tolles Programm. Im Vergleich zu anderen Apps besticht die tolle Grafik, inzwischen hat sich auch das Ausprobieren und Wechseln zwischen verschiedenen Apps erledigt: Rivers & Seas hat das Finale bei mir bereits gewonnen!

Karl-Heinz Czierpka
Motorkreuzer Tremonia 2.0

Ich benutze euer App jetzt das dritte Jahr und bin super zufrieden, auch weil es immer weiterentwickelt wurde. Damit sogar besser als teure Plotter. Kompliment und vielen Dank.

Ralf S.

Download Rivers & Seas for iPad in the App Store


Answers to common questions and how to get started with Rivers & Seas

Rivers & Seas runs on any iPad of all generations (normal, mini, Air and Pro).

However, real GPS - which is needed to determine your current position - is only incorporated in iPads with a mobile communication function. It is therefore recommended to use such a device for an efficient use of mapping apps.

WiFi-only iPads do not include real GPS. This means that your location is merely identified by wireless networks in the area. Obviously, while being on water without any known WiFi, positioning can not take place as Rivers & Seas (as well as any other mapping app) is incapable of tracking positions outside cities.

Nevertheless, there is the option of using an external GPS receiver with a WiFi-only iPad. One example is the GNS Navilock GPS/GLONASS 2000 BT (available on Amazon). With such a device users of iPads without built-in GPS get to enjoy real location tracking, too.

If you do not want to use the positioning feature, Rivers & Seas runs on WiFi-only iPads, too. You have the option of downloading offline maps beforehand while being connected to a wireless network. This implies that you will not need an internet connection when underway. Alternatively, you may create an internet connection with a local WiFi hotspot using a mobile phone.

Rivers & Seas also runs on WiFi-only iPads. You can download routes or home areas before going on tour. You do not need an internet connection when using the prior downloaded offline maps.

WiFi-only iPads do not include real GPS. This means that your location is merely identified by wireless networks in the area. Obviously, while being on water without any known WiFi, positioning can not take place as Rivers & Seas (as well as any other mapping app) is incapable of tracking positions outside cities.

You have the option of using an external GPS receiver with a WiFi-only iPad, for instance the GNS Navilock GPS/GLONASS 2000 BT (available on Amazon). With such a device, users of iPads without built-in GPS get to enjoy real location tracking, too.

There is no free demo version available.

Yet, you can buy and try out Rivers & Seas free of risk. In case you are not convinced, you get a refund on Search the list of your purchases for Rivers & Seas and shortly describe the reason why you wish to return the app.

Reasonable refund requests within an appropriate period after your purchase, are generally reimbursed by Apple.

Apps for iPad or iPhone are only available from the App Store. Besides paying by credit card, you can buy apps by redeeming iTunes gift cards. ITunes gift cards are available in most supermarkets and petrol stations (usually at checkout).

Futhermore, you can buy iTunes gift cards online where you can simply pay with your EC-card or via online-banking. You find such online shops here.

Rivers & Seas contains maps for all sailing areas including all updates. There are no additional costs for maps.

Rivers & Seas works very intuitively:
The bar on the left contains information about bridges and locks ahead and will show up as soon as you are sailing along such waterways.
Bookmarks are set by tapping on the map for long, just like in Apple Maps.
To add a route to your list press “+”, then mark the route with your finger. Once you have entered a route, you can download it in the list as an offline map using the arrow to the right.
The settings of Rivers & Seas can be found in the general settings of your iPad (Home> Settings> Rivers & Seas). Here you can enter the dimensions of your boat and your travel speed.
To try it all on the sofa first, you can switch on a demo mode in the settings. While in demo mode, you can simulate the position of the boat with finger tips on the map. (Remember to switch off the demo mode again during real use on water.)

To view your position, Rivers & Seas, just like any other mapping app, needs the GPS tracking data from your iPad. Please check the following:

  • Do you have an iPad with mobile function? Only these have a GPS receiver. See the particular question above for this matter.
  • Did you turn on ‘Location Services’ (Home>Settings> Privacy> Location Services)? Did you allow Rivers & Seas to access information about your current location?
  • Are ‘Location Services’ activated under Home> Settings> Rivers & Seas? And is ‘Enable demo mode’ deactivated?
  • Did you activate position tracking in Rivers & Seas (arrow symbol at the top left)?
  • Does your iPad have clear visibility to the sky in order to receive GPS signals?

The bar with information about bridges and locks appears once your iPad is moving on (or near) a waterway for a couple of seconds.

A corridor of 250 meters to the left and right from the center of a waterway applies (i.e. river, canal, shipping channel, route through a lake). On the edge of very wide rivers or lakes, Rivers & Seas may lose its relation to the waterway. Slightly move closer to the center. The bar should then reappear.

As soon as you are heading towards a lock, it appears in the left-hand bar along with bridges coming up. If you tap the lock, the pin is placed accordingly. To display the lock’s details, tap (i) in the labeling of the pin.

You can enter dimensions and travel speed of your boat in the settings of Rivers & Seas. These can be found in the general settings of your iPad (Home> Settings> Rivers & Seas).

Once you are on a waterway, bridges and bookmarks coming ahead will be displayed automatically. You do not have to prepare anything.

You can display the route and the arrival time to destinations. There are two options:

A) You are on the way and want to know how far and how long it still is until you reach a certain position:

To see both distance and travelling time to a desired destination, simply place a pin or bookmark on it. As soon as you are on the waterway which leads towards this destination, distances to bookmarks, pins, bridges and locks will be shown in the bar on the left. If an average travel speed has been determined after a few seconds of travel, then it will also be displayed.

Rivers & Seas calculates the route and travelling time to destinations up to 100 km ahead on the waterway. Travelling time already includes duration of passing through locks and their respective opening times. (Rivers & Seas is not yet able to process routes via branching waterways. However, this is planned.)

B) You want to know the distance and the duration of a route in advance for scheduling purposes:

Use the route tool to mark your planned course. Based on your pre-set travelling speed (scroll right to the right) Rivers & Seas will show you length as well as duration of the route in the upper bar of the map. You can specify your default speed in the settings (Home> Settings> Rivers & Seas).

You can simply enter coordinates in the search. As a search result, you get the position plus the nearest object. Tap this and you have a pin on the map which you can then save as a bookmark.

Once you get closer to this bookmark it will show up in the left bar, including distance and time until arrival.

You can plan routes in Rivers & Seas in the form of single route sections:

For an easy entering of sections, you mark them as a freehand drawn line (not with straight lines):

    • 1. Touch the icon with the two flags and the line in the toolbar
    • 2. Add a new track with the "+" sign
    • 3. Mark the section with your finger

While marking, you are able to move the map with two fingers. Length and duration of the section are displayed in the upper bar (swipe it to the left) and in your list of routes.

You can download marked routes as offline maps so that no internet is needed on the way. Simply click on the arrow in the circle right next to the route in the list.

To sail off a route you have the option of displaying it in the map. Just tap the according route in your list.

Use the stylus under the list of routes to edit the displayed route.

Tap the "X" at the bottom of the list if you do not want a route to be shown in the map.

An automatic calculation of a route between two locations like in the car is not yet available. We are working on it.

Routes are marked as a line with your finger. You can move the map section with two fingers while editing a route (with the stylus).

The first marked line is going to be the route with start and finish flags. It can be extended at both starting and ending point. Use the eraser if you want to remove whole lines or parts of it, allowing you to correct route sections and reassemble them (with the stylus). Also, it is possible to add existing route sections by connecting one end of the section to the route.

The "X" icon allows you to remove a displayed section from the map without deleting the entire route.

In order to mark whole areas such as lakes or cities for download, just draw a loop in one go around it so that the sector is shaded red.

When loading an offline route, sections that are already contained in another route are reused and not reloaded. Changes are downloaded automatically should you edit an offline route.

You delete a route by swiping over it in the list. In the case of offline routes, related downloaded maps will be deleted, too.

You cannot mark e.g. Europe for download. Marking lines or loops is only possible from a regional zoom level whereas the eraser works on all zoom levels.

Signs and symbols in our map are based on hydrographic and nautical charting standards set by the International Hydrographic Organization, the so-called INT1. A more detailed explanation can be found in this PDF.

Put a pin into the watercourse and it will show you the exact chainage at this point.

First, you mark the route you want to sail off. Then you download it.

To do this, click on the icon with the two small flags in the toolbar. Tap on the "+" under the (empty) list and mark the route with your finger on the map. In your route list, tap the arrow on the right side. The required maps will be loaded. (There is no need to additionally circle the waterway.)

Another option is to circle and download desired areas instead of routes (lines). Draw the circle in one go, it is then shaded red. In order to avoid red-shaded areas in the map for your planned routes, it is useful to load additional areas in a separate route.

If you change a route with offline maps, the required offline maps are automatically reloaded, or offline maps that are no longer needed are removed from the iPad.

When no Internet connection exists, Rivers & Seas automatically uses loaded offline maps.

In Rivers & Seas, every single part of the earth is available as an offline map. Offline maps are created by our server at first request. This requires a lot of computing time, which is why loading can take several hours. At the beginning this may lead to the impression that nothing actually happens. Just wait.

Note that iOS automatically ends apps in the background after three minutes, meaning that Rivers & Seas could not finish to load maps. Therefore it is important to let Rivers & Seas run in the foreground and that your iPad stays switched on.

Created offline maps are temporarily stored on our server. A popular route is loaded much faster, because it already exists on the server and does not need to be recreated.

No, the app does not need to remain open. With the update to version 1.4 we changed the way how the maps are downloaded, so it is processed in the background with iOS 9 or higher.

(An exception is the iPad 1, where under OS 6 downloading in the background is not possible, because apps in the background are stopped after 3 minutes. Here the app has to remain open for downloading offline maps.)

Offline maps require more memory in your iPad than their actual net data contains. This is due to a kind of waste in the memory: files are always stored as same sized blocks by the iPad. These blocks are too large for the very small files of Rivers & Seas’ elements, leading to unnecessary space being occupied.

It is like packing one jelly baby in an empty pack of cigarettes. Unfortunately this is not easy to change.

To remove an offline map, delete the route belonging to it. Before deleting you can choose whether you only want to remove the offline map or delete the entire route.

Should you have the impression that offline maps have not been correctly removed, activate the option "Repair offline routes" in the settings (Home> Settings> Rivers & Seas).

The next time you open Rivers & Seas, all offline maps that are no longer part of a route will be removed. Just like loading maps, this might take quite a while due to the large number of files. Please leave Rivers & Seas active in the foreground of your iPad.

Settings can be found in the general iPad settings. There is an alphabetically ordered list of apps. Choose Rivers & Seas for its settings.

The world over water is easy to map. Thus exact maps such as OpenStreetMap and OpenSeaMap exist, which we also use. However, indicating the depth of water is not easy as you simply cannot see it. Water depths can only be measured with suitable boats and equipment or be bought for a lot of money from hydrographic offices. This is the reason why our maps do not yet indicate the depth of water.

In order to capture water depths with suitable private boats and equipment for OpenSeaMap, the project “” has been started. Anyone who has a boat with a depth gauge and chartplotter can contribute personally measured depths there.

Ther is no Android version of Rivers & Seas so far.

Currently we are not actively working on an Android version even though we actually planned on doing so last year. Financially, the production of an Android version does not pay off. There will be no Rivers & Seas for Android in the foreseeable future.

We are a digital agency that realizes major internet projects. More information can be found at Rivers & Seas is kind of a hobby of ours for which we engage employees who are currently not working on other projects. That is the only reason why we are able to offer such an extensive app at a reasonable price.

An iPad quickly becomes too hot when it is at the helm, exposed to sunshine, and simultaneously being charged. It then turns off and displays a temperature warning. The heat can be enhanced by a tablet case, storing additional temperature. It helps to remove the iPad from the sun and ensure good ventilation.

An iPad heated by the sun is charged slower due to a security mechanism that prevents the iPad from becoming even hotter. Thus it can happen that the iPad discharges faster than it is charged. In this case removing the iPad from the sun helps as well.

However, a weak charging adapter could be the cause, too. Apple offers "USB Power Adapters" with 5W, 10W and 12W. The stronger the power input, the faster your iPad charges.