Sending data : esp8266


I'd like to replace bluetooth with wifi, then I bought an ESP8266.
I already set it as a access point.
Is it possible to send data in streaming as I'm doing with bluetooth ?
The final goal is to read data continuously with android. (everything is already working with bluetooth)
Will need I to send a request everytime I want data ?

I'm a little bit lost now I changed protocole. Could someone explain me quickly ?
I only found tutorials with thingspeak or other thing but I'd like to do from scratch.

One reason, I want to use wifi cause my old phones are really bad with bluetooth but are really good with wifi.

Thank you.