Quality is delighting customers
Normally performance testing of mobile application is not required as mobile applications have only one user and if you're happy with application load time, responsiveness, rendering times, etc. - you should be good to go.
If your application is being updated frequently and it is relatively big and complex you might want to automate the steps and set some thresholds which define maximum operation completion time. In that case check out the following tools:
As you said you have to test a mobile application, you can test,
Performance testing services