The OBD stats were developed with this particular dongle:
https://www.amazon.com/dp/B00H9S71LW?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_2
Almost any bluetooth dongle should work though, but be sure its not BLE as the current version of the Dually doesnt support it, but the next version should. No need to install any app on the dually, the dashboard should auto connect.
https://www.amazon.com/dp/B00H9S71LW?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_2
Almost any bluetooth dongle should work though, but be sure its not BLE as the current version of the Dually doesnt support it, but the next version should. No need to install any app on the dually, the dashboard should auto connect.