Quality score is a metric that Google uses. It is based on a lot of factors not only within your account but also industry numbers.
No other 3rd part tool(if any) will be able to tell you how this is calculated at all.
The only way to know your quality score is uploading your account.
AdWords Top Contributor
Did you find any helpful responses or answers to your query? If yes, please mark it as the ‘Accepted Solution’!
Re: Quality score
I would add that QS is re-calculated every time an ad is eligible to take part in an ad auction. So, QS could be re-calculated a number of times per day... (The QS presented is an average QS, though the real QS can change many times during the day).
Since it is hard to predict which of your keywords would match a given search query, it would also be hard to predict the QS...
Remember that the major parameter that effects QS is CTR, The higher the CTR, the higher the QS.
Did you find any helpful responses or answers to your query? If yes, please mark it as the ‘Best Answer’