iDO QRCode is free and the fastest & most accurate QR code scanner. The app  is extremely easy to use . Just launch the app and it will automatically detect and scan QR code.
Features:
-- Support the most & midest QR codes.
iDO QRCode can scan and read almost all QR types including text, message, url, contact, business card, Email, calendar, location, Wi-Fi and many other formats. 
-- Historic records functionality.
Contribute users convenience to review scan records.
-- Flashlight supports low light environment.
-- One Click to Share Scan results.
-- Customize scanner settings to meet kinds of scan demands.
All kinds of brand's android phone, such as Intex，Sony，LG，Samsung Galaxy Note，Huawei，ZTE，Lenovo，TCL-Alcatel，Xiaomi，Moto X，Motorola，HTC，Karbonn，Lava， Gionee，Nokia, Panasonic, Maxx, ASUS, Nexus, OPPO, VIVO, Dell, BlackBerry, Micromax, Acer, HP, Toshiba, Gigabyte
--Contact us--
Official website：http://www.idotools.com/
Email：[email protected]