Manual Tester can test the application under a similar condition when the application goes live, any bug, glitches or error can easily track with help of manual testing. Basically, when you are testing an application manually main focus is on understanding the requirement, documenting the test cases and executing the test cases. Manual Testing help to identify any issue related to look and feel of the application. It also helps to find out the usability issue with the application any bug and defect that may pop up as soon as the user handles the given software in a certain way are more likely to be fetched with the help of manual testing. An initial investment in manual testing is very low as it doesn’t require costly tools or high-level skills and hence in short term scenarios, manual testing is very cost-effective.
Have a look into the most frequently asked interview question on Manual Testing.