Thingspeak

ThingSpeak is an open source Internet of Things (IoT) application and API to store and retrieve data from things using the HTTP protocol over the Internet or via a Local Area Network. ThingSpeak enables the creation of sensor logging applications, location tracking applications, and a social network of things with status updates

https://www.instructables.com/id/IoT-ESP8266-Series-3-ThingSpeak-Android-Control-No/

https://www.thethingsnetwork.org/community