In my humble opinion, a project manager requires to have not one but a few tools to manage a project. The tools are just like a hairdresser. The hairdresser uses various kinds of scissors and combs to cut hair. The hairdresser will also use a shampoo to wash and water to rinse the customer’s hair.
Similarly, a project manager will have different tools to manage a project. Planning tools such as Microsoft Project© or some other similar software to list down the various activities and schedule. A spreadsheet table is needed to list the various project risks; project issues and most importantly is to track the project costing.