The use of the ESP8266 in the world of IoT

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By Iman99
#91105 Hello guys, may I know what solution should I get to develop mobile application for IoT based? Im using NodemCU 8266 + pulse sensor + Firebase. For the sensor setup part im already done, now I need to develop mobile application before connect mobile app with Firebase to get the reading. Hope that anyone can help me with a solution :D