A free app for Android, by QNAP.

Qmanager is a free application that can monitor the information of your QNAP Turbo NAS (firmware version 4.2 and above) with your Android phone. It can show the status of the device and its components such as the temperature, battery level, network connection, etc. It can also display the recent system events and provide the log of the system.

Besides, it can also monitor the users online, so you can know whether the computer is occupied or not. It can also provide the management function for the download task and the backup task of the QNAP Turbo NAS. You can set the pause or resume state of the task and also the completion status.