We need makers who can flash ESP8266 device. Everybody don't have time or knowledge for flashing the ESP8266.
Here is a Win-Win : Buy 1 time fee credits (lifetime subscription), send us device id and device type, that's all!

There will be minimum credit limits later. For now you can start with 10 Credits.
1 Credit cost: Single relay
2 Credit cost: Double relay
3 Credit cost: Thermostat
4 Credit cost: 4 relay
How to spend credits?
-Send device id and device type to us. Note that device id can not be updated when you assign credits to a device.