Dynatrace gets the data from the browser, so using Developer Tools in any browser will give you an idea of what Apdex is. You have to look out from the time it takes to load and eventually if there are errors. Please keep in mind that with default configuration, Apdex is calculated along these lines:
Could you please explain more on how to look for apdex at the browser level?
Also, is there a way to calculate the apdex locally before we push the changes to test environment which is being monitored by dynatrace.
We are trying to analyze apdex where we dont have one agent to see if it is improved and then push the changes to the environment with agent to monitor the same for longer period.
The browser doesn't really tell you what the Apdex is. Dynatrace looks at the response times and errors and does all the calculation stuff for you.
But, since Apdex calculation is really straightforward, you just have to look at the response times. If it's less than 3 seconds, the user is satisfied, till 12 tolerates it, and above is frustrated. If you have errors, you have a frustrated user action...