ManicTime

ManicTime is one of the best apps for Windows that allows you to monitor how long you spend on your computer. You can track the total time you spend using your computer each day, and you can also see which apps you use the most.

This feature is not only useful on a personal level, but it also lets you find out how much time you spend working, so you can later invoice your employers. You can also check how long you were away on a food break, at what time you started work, and much more. The customizable graphs can be filtered by day, week or month.

The Standard version is free and only lets you use the program locally, as well as restricting other lesser features. Other than that, you can use the program freely for its main objective: to find out which apps you use the most on your computer. You will need to subscribe to the paid version if you want other features, such as syncing your data with your company's servers and accessing them from anywhere.

So, if you are looking for a program to find out how much time you are spending on your computer and on which apps, don't think twice and download ManicTime now.