Project / Task tracking and management

Project / Task tracking and management: I would like to use Invoice-ninja for managing projects and work tasks. There are projects that are billed based on time/materials so tracked time is billable. Then there are projects that are quoted with the hours assigned so it is up to us to be efficient to complete the job at or under the estimated number of hours. On the later, being able to track actual time to compare to budgeted time is essential.