We offer a discount for public applications that prominently shows its users that this application is "Powered by GraphHopper API". The discount is valid for 12 months and can be extended by resubmitting the required documents. To receive this discount, please include a link to graphhopper.com in the places where you use the GraphHopper Directions API. The user only needs to see this link once, e.g. once per application start or the first time the website is accessed. If you use other geoservices, you must explicitly specify which services come from GraphHopper and which from other providers. The user must have the possibility and sufficient time to read and click on the link for at least 4 seconds. As a simple example, take a look at GraphHopper Maps.
An HTML snippet for this is:
Powered by <a href="https://www.graphhopper.com/">GraphHopper API</a>
For small screens (less than 190mm diagonal) you can use the above link without 'Powered by'.
In addition to our attribution, you must always specify an attribution to OpenStreetMap, regardless of the white label option.