Listable uses Google Maps to power the maps shown throughout your website. They are free to use and offer a decent experience.
However, we believe there is a better way. That is why we have implemented in Listable support for Mapbox, a service that delivers maps with a cleaner interface, higher performance and more customization options than Google Maps. To use Mapbox you need to create an account with them and get a token that you will paste in Appearance → Customize → Theme Options → Map Options.
You don’t have to use this service if you don’t want to. Listable will automatically fallback to using Google Maps. The API key can be inserted under Listings→ Settings→ Listing.
*Note: Mapbox is free to use up to a certain amount of monthly map views. You can get more details from their site.
Besides the maps shown to your visitors, the Google GeoCode API is used to fetch a standardized geolocated address when a new listing is created or a listing’s address is updated (so this is a one-time event, hence a single API request). The GeoCode API offers a pretty large free tier that should be sufficient for just about everyone. You should account for these limits when importing large numbers of listings (maybe split them up into chunks so you stay bellow the limits).