Terms of Use

1. Scope and provider

These Terms of Use apply to the Rivanaut apps for iPhone, iPad, Apple Watch, Android and Wear OS and the related online services (together “Rivanaut”). Rivanaut is provided by Dennis Donner, Eduard-v-Winterstein-Straße 11, 14480 Potsdam, Germany, app-support@donner.io (“we”). See the legal notice for details. The German version of these terms is legally binding; this English version is provided for convenience.

How we handle personal data is explained in our Privacy Policy.

2. What Rivanaut offers

Rivanaut helps boaters on inland waterways with charts, vessel-aware route planning, navigation aids, harbour and place information, water levels, notices to skippers, vessel traffic (AIS), weather, an anchor watch, a logbook, cost tracking, companion apps and widgets, and optional community features such as friends, live location, shared and public routes, reviews and reports. Some features need an account, an internet connection or an in-app purchase. On Android, an account is currently required.

3. Navigation and safety — please read

• Rivanaut does not replace official charts, notices to skippers, signage, lock and bridge regulations, or instructions from the authorities and lock staff.
• Water levels, depths, clearances, weather, AIS traffic, lock and bridge data, opening hours, routes and community content come from third parties or users, or are calculated. They can be incomplete, outdated, delayed or wrong.
• Route suggestions, including AI suggestions, are proposals. Check every route against official sources before and during the trip.
• Alerts such as the anchor alarm depend on your device, battery, sensors, connection and system settings and may fail.
• The skipper is always responsible for safe navigation, keeping a proper lookout, complying with the applicable regulations and carrying the documents and equipment required.

4. Your account

You must be at least 16 years old to create an account. Provide accurate details, keep your password secret and tell us if you suspect misuse. You are responsible for activity in your account unless you are not at fault. You can delete your account at any time in the app (profile → “Delete account”).

5. Your content

Your rights. Content you create — such as reviews, photos, routes, trips, reports and profile details — remains yours. You confirm that you hold the necessary rights to it and that it does not infringe the rights of others (for example copyright, personal rights or privacy).

Licence. To run Rivanaut you grant us a non-exclusive, royalty-free, worldwide licence, limited to the purpose of operating and presenting the respective feature, to store, reproduce, adapt technically (for example resize photos), moderate and make your content available to the audience you chose. The licence ends when you delete the content or your account, except for content you shared with others before deletion, reports that remain without your account link (see the Privacy Policy) and copies required by law.

No illegal content. Do not post content that is unlawful, offensive, discriminatory, sexual, violent, misleading or advertising, that reveals other people’s personal data without permission, or that deliberately contains false navigation information.

Moderation and removal. Reviews and photos are checked before they are published; photos are also checked automatically. We may refuse, hide or remove content and restrict or block accounts if content or behaviour violates these terms or the law. We take your legitimate interests into account and, where possible, tell you why.

Reporting. You can report reviews and photos in the app. You can report any other content, including suspected illegal content, by email to app-support@donner.io. We review reports promptly and carefully.

6. Fair use

Do not misuse Rivanaut. In particular, do not use it to harass others or track people without their consent, do not submit false reports, do not overload, scrape or attack the service or its data sources, do not bypass technical restrictions and do not resell the app or its data unless the respective data licences permit it.

7. Third-party data and services

Rivanaut uses data from OpenStreetMap, OpenFreeMap, OpenSeaMap, Open-Meteo, aisstream.io, national gauge services, EuRIS, Google Places and others. These data are subject to the providers’ licences and terms; sources and attributions are shown in the app. We cannot guarantee that third-party data is available, complete or correct.

8. In-app purchases

Some features are offered as in-app purchases, including auto-renewing subscriptions. Purchases are made through the Apple App Store or Google Play and are subject to their terms. Payment, billing, renewal, cancellation and refunds — including any statutory right of withdrawal — are handled by Apple or Google. The current offer and its terms are shown in the app and the store before you buy.

• Cancel a subscription in your Apple ID settings or in Google Play under “Subscriptions”. Deleting the app or your Rivanaut account does not cancel it.
• Refunds are requested from Apple (reportaproblem.apple.com) or Google Play under their policies.
• Restore purchases on a new device via the app.

9. Availability and changes to the service

We work to keep Rivanaut available, but we cannot guarantee uninterrupted operation. Maintenance, network problems and outages of third-party services can cause interruptions. We may develop Rivanaut further and change or discontinue individual features for valid reasons (for example technical progress, changed data sources or legal requirements), taking your interests into account. For features you have paid for, your statutory rights remain unaffected.

10. Rights to the app

The app, its design, the name Rivanaut and the logo are protected. We grant you a simple, non-transferable right to use the app for your own, non-commercial purposes in accordance with these terms. Statutory rights of use (for example under §§ 69d and 69e of the German Copyright Act) remain unaffected.

11. Liability

We are liable without limitation for damage caused intentionally or by gross negligence, for injury to life, body or health, under the German Product Liability Act and where we have given a guarantee.

For slight negligence we are only liable if we breach an essential contractual obligation (an obligation whose fulfilment makes proper performance of the contract possible in the first place and on which you may regularly rely). In that case our liability is limited to the damage that is typical and foreseeable for this type of contract.

Otherwise, liability for slight negligence is excluded. These limitations also apply to our representatives and agents. For features provided free of charge, the statutory liability privileges apply.

Section 3 applies: the skipper remains responsible for navigation. Information in the app does not relieve anyone of the duty to check official sources.

12. Termination

You can stop using Rivanaut and delete your account at any time. We may terminate or block an account for good cause, in particular for serious or repeated violations of these terms, and otherwise with reasonable notice. Paid subscriptions continue under the store’s terms until you cancel them.

13. Apple and Google

These terms are an agreement between you and us, not with Apple or Google. Apple and Google are not responsible for the app, its content, maintenance or support. If you downloaded the app from the Apple App Store, Apple’s Licensed Application End User License Agreement also applies; Apple and its subsidiaries are third-party beneficiaries of these terms and may enforce them against you. If the app fails to conform to an applicable warranty, you may notify Apple, and Apple may refund the purchase amount; Apple has no further warranty obligation. We, not Apple, are responsible for handling claims relating to the app (for example product liability, legal compliance, consumer protection and intellectual property claims). Google Play’s terms apply to downloads from Google Play.

14. Applicable law and disputes

German law applies, excluding the UN Convention on Contracts for the International Sale of Goods. If you are a consumer, this choice of law does not deprive you of the protection of mandatory provisions of the law of the country in which you habitually reside.

We are neither obliged nor willing to take part in dispute resolution proceedings before a consumer arbitration board.

15. Changes to these terms

We may change these terms for valid reasons, for example new features, changed data sources or new legal requirements, provided the change is reasonable for you. We will inform you of material changes in the app in good time before they take effect. If you do not agree, you can stop using Rivanaut and delete your account; your statutory rights remain unaffected.

16. Contact

Questions about these terms: app-support@donner.io. Postal address: see the legal notice.