“darktable is an open source photography workflow application and raw developer. A virtual lighttable and darkroom for photographers. It manages your digital negatives in a database, lets you view them through a zoomable lighttable and enables you to develop raw images and enhance them.”
After mediocre performance at school and undergraduate degree, I started using Pomodoro for my masters and crushed it. It helped significantly by keeping me on task. If you’re interested, I highly recommend you try it and see if it works for you.