4fun-Smart and fun life

----The main function----
1. Make friends
The much anticipated chat feature has finally arrived! Not only can you achieve online chat, you can also send pictures, expressions, and voices so that your chat is awesome!
2. Chat messages
Send and receive friend information anytime, anywhere.
3. Interaction with smart products
With Bluetooth 4.0, users can connect Spring Girl's line of products to our apps, and users can experience different ways of playing through multiple modes.
Music follow-up, using the music rhythm to control the vibration intensity; video playback, with the video rhythm to change the strength; a turn, shaking the phone to control the vibration intensity; hand-painted mode, draw an arbitrary curve, fluctuate with the curve ups and downs and so on.