User testing, is it really necessary to do for each application in same domain

1. How many user tests should you do?
2. Is UserTesting necessary?
3. How many tests can you do on UserTesting?
4. When should UserTesting be done?

How many user tests should you do?

The best results come from testing no more than 5 users and running as many small tests as you can afford.

Is UserTesting necessary?

The importance of user testing your products

User Testing means you can target the real problem right away, so your team don't spend time 'fixing' the wrong thing - so your time and money is invested in the right problem.

How many tests can you do on UserTesting?

How Many Tests Can You Do On UserTesting? The number of tests you receive largely depends upon the business needs. It usually varies. You can expect 1-2 tests to appear daily on your dashboard.

When should UserTesting be done?

If possible, usability testing can and should be conducted on the current iteration of a product before beginning any new design work, after you've begun the strategy work around a brand new site or app.