UK Entrepreneur Visa - Applying for Dependants

Can the main applicant who applies and is granted an Entrepreneur Visa later apply for dependent visa (for spouse and kids) after a few months or is it necessary that the main applicant should apply along with the dependents if he/she has intention of bringing dependents along? The reason why I ask is because in case the visa is denied, it would be a huge loss of money if it is required to apply for dependents along with main applicant. I hope we can apply for dependents after the main applicant gets the visa approved?

Yes. You can apply for them later anytime. I did get my kids visa 3 months after i have mine. It was straightforward and quick as they got it in 10 days.