heatpass

Data credits

Heatpass is built on open data. Each source is credited below, under the license it allows.

Places
© Overture Maps Foundation, overturemaps.org. Includes data from Meta, Microsoft, Foursquare, PinMeTo, Krick, RenderSEO, DAC, BrightQuery and AllThePlaces. License: CDLA Permissive 2.0; Foursquare under Apache 2.0 (notice below); AllThePlaces under CC0. Source
City boundaries
© OpenStreetMap contributors, Overture Maps Foundation. Also geoBoundaries, Esri Community Maps contributors and Land Information New Zealand. License: Open Database License (ODbL); others CC BY 4.0. Source
US map
State outlines from the U.S. Census Bureau's cartographic boundary files, via us-atlas. License: Public domain (U.S. government work); us-atlas under ISC. Source
Maps
OpenFreeMap © OpenMapTiles. Data from OpenStreetMap. License: OpenFreeMap terms; ODbL. Source
Area context
U.S. Census Bureau: American Community Survey, Gazetteer files and County Business Patterns. License: Public domain (U.S. government work). Source
Public records
California ABC, and city open-data portals: Chicago, New York City, San Francisco, Los Angeles, Seattle, New Orleans and Norfolk. License: Each dataset's own open license (public domain, CC0 or an open-use policy). Source
Restaurant tech
Read from restaurants' own public websites, politely: an honest crawler name, robots.txt honored, one page at a time. License: Our own detection. Source

Foursquare notice

Heatpass changed the data: filtered to restaurants and bars, matched across sources, and added the tools each one uses.

Foursquare OS Places Notice

© 2026 Foursquare Labs, Inc. All rights reserved.

The Foursquare OS Places dataset (the "Data") is licensed under the Apache License, Version 2.0 (the "License"). You may not use, modify, or distribute the Data except in compliance with the License.

As set forth more fully in the License, if you use, modify, or distribute the Data, you must:
– provide recipients with a copy of the License.
– if applicable, include prominent notices to the extent you've changed the Data.
– preserve attribution to Foursquare, including preserving the full content of this NOTICE.txt file.

To ensure appropriate attribution to Foursquare, we recommend the following:
– if using/distributing the Data in flat file form as-is or after making changes/modifications: include this NOTICE.txt file, which may be modified to include an additional notice of your changes/modifications, if any.
– if using/distributing the Data in API form as-is or after making changes/modifications: include a copy of the content from this NOTICE.txt file prominently in your developer documentation for such API, which may be modified to include an additional notice of your changes/modifications, if any.

You may obtain a copy of the License at: http://www.apache.org/licenses/LICENSE-2.0. Unless required by applicable law or agreed to in writing, the Data distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

See the License for the specific language governing permissions and limitations under the License.

We also encourage you to join our Placemaker community at https://opensource.foursquare.com/placemaker/ where you can contribute and provide suggestions to improve the accuracy of the Data for future releases for yourself and others.