Features:
• High quality Icons
• Frequent Updates.
• Icon Request Tool.
• Icon Search.

On some launchers you need to enter the launcher settings to activate the icon pack. :)

Supports
• Nova Launcher
• Apex Launcher
• Poco Launcher
• OnePlus Launcher
• Go Launcher
• ADW2
• Action Launcher
• ABC Launcher
• Aviate Launcher
• Evie Launcher
• Holo Launcher
• ICS Holo Launcher
• Lucid Launcher
• M launcher
• Zero launcher
• V Launcher
• Mix Launcher
• Cool Pixel Launcher
• Lawnchair Launcher
• Evie Launcher
• Super P Launcher
• Rootles Launcher
• Solo Launcher and many more...

If you are using OnePlus launcher just enter the launcher settings: hold your finger on the home screen, then click "home settings" and then "icon pack".

How to Apply Icons with Flat Square Icon Pack
1- Open CandyPop Icon Pack
2- Navigate to Apply 
3- Select Your Launcher
4- Enjoy Your New Theme 

Stay in touch:
https://twitter.com/akinhd