Apps like Qmanager

Here are some great alternatives to Qmanager by QNAP :
Domotz Pro: Network Monitoring
Domotz Pro: Network Monitoring
★4.2
OS Monitor: system manager
OS Monitor: system manager
★4.5
Activity Monitor: cpu, battery
Activity Monitor: cpu, battery
★4.1
AiMaster
AiMaster
★3.8
Quick System Info PRE
Quick System Info PRE
★4.4
Task Manager: monitor CPU, RAM
Task Manager: monitor CPU, RAM
★3.2
Android Phone Monitor & Manage
Android Phone Monitor & Manage
★4.2
store data and use later
store data and use later
★3.8
Tips Tricks for Android Phones
Tips Tricks for Android Phones
★4.6
Mobile Device Manager Plus
Mobile Device Manager Plus
★3.5
Check Internet Data Usage
Check Internet Data Usage
★3.8
Device Info: Check System, CPU
Device Info: Check System, CPU
★4.6
My Mobile Settings & Info
My Mobile Settings & Info
★4.2
App Management
App Management
★3.5
WiFi Manager & Data Monitor
WiFi Manager & Data Monitor
★3.9
Data Manager- Track Data Usage
Data Manager- Track Data Usage
★4.3