CheckBlue can find all BLE devices that use Bluetooth 4.0+ Low Energy(also known as Bluetooth Smart) Full Support of read, write, and notify is included. Developers can use CheckBlue to write, read or notify the especial characteristics. This is a simple, efficient and universal BLE tool. We will try our best to help you save time and money. Now for Apple's IOS system users, you can download directly in the App Store, for Android system users, you can download in Google Play.