I want to develop a small time-tracking app for personal use, to improve my programming skills in general. I know some JavaScript and some Python, but I am not particularly good at either. Which language would be more useful to get better at? And should I start using a framework or code everything myself from scratch?
The choice between JavaScript and Python for developing a time-tracking app will largely depend on your personal preferences and the type of app you want to build.

If you want to build a web-based app, JavaScript is a great choice as it's a popular language for web development. On the other hand, Python is a versatile language that's often used for back-end development and scripting.

As for whether you should use a framework or code everything from scratch, it depends on your goals for the project. If you want to focus on improving your programming skills, coding everything from scratch can be a great way to learn. On the other hand, if you want to get a functional app up and running quickly, using a framework can be a good choice.

Ultimately, the best way to improve your programming skills is to just start building something and keep practicing. Try starting with whichever language you're more comfortable with, and don't be afraid to switch to the other language if you feel like it will better suit your needs.
That is good to know. I would like to develop a web app so I guess JavaScript is what I should use. Do you have a recommendation on a specific JavaScript framework that would be easy to learn to build my app with? I would prefer one that has a lot of online resources that I can use in my learning.