A slowly growing set of study tools. Each one is deliberately tiny: it opens fast, it works offline, and it does not ask you to sign up for anything.
Write a few questions, then test yourself until they stick.
A vocabulary list that brings back the words you keep forgetting.
Keep track of what you are reading and how far you have got.
Short study notes, kept on your own device.
StudyPine is a personal side project, built in spare evenings. There is no company behind it and nothing is for sale.