App Inventor Navigation API key

[SteveJG]

HOW TO: Use the Navigate control

Simple Navigate by SteveJG [NavigateRose2] This tutorial is an example of one way to use the Navigate tool to build a Simple Navigate app. The instructions are intended for intermediate or advanced users of App Inventor 2. There are no detailed instructions. Provide similar code in your app. The Blocks are the documentation. Navigate Control The Navigate control provides ‘turn by turn’ directions used to get between two locations. The routing output is similar to directions provided by the G…

@Patryk_F

To use this api for more users of your app, you will probably have to pay for ApiKey.

This advuce in my experience is probably not true. The terms of service depend on the ORS Plan you sign up for.
Free usage under the Standard terms have usage limits ( Plans | Openrouteservice ) . Once your users or you use your app in excess of these limits, then you incur extra charges once the app's daily limit is exceeded. If you have heavy usage of your app then you need to upgrade your plan.