IP gives you a rough location (like which city at best), SSID/BSSID can give you street/building level accuracy if it's in a database like https://wigle.net htt

IP gives you a rough location (like which city at best), SSID/BSSID can give you street/building level accuracy if it's in a database like https://wigle.net https://wigle.net Considering the scale of these apps, I'm guessing they have internal wifi<->location databases with fairly great accuracy.