Side projects get worked on in odd hours, often a week apart. Each time you come back, you need to know where you were and what the next small thing is.
app.tatask.com
Launch my app
Build sign-up flow
Completed (1)
Email and password
The next step is always visible
Open the project and walk down the tree. The deepest unfinished task on a branch is where you stopped. No need to reread notes to get going again.
Small enough for one sitting
If a task would take more than an evening, open it and split it. Finishing something each session is what keeps a side project alive.
Phone for ideas, laptop for work
Capture ideas on your phone when they turn up, then file them into the tree from your laptop later. Both stay in sync, and both work offline.
The features that help
Nested tasksEvery task can hold subtasks, as deep as you need. Big jobs turn into small steps.
Offline and syncA full copy of your list on every device. It works on the train and syncs when you are back.
Today listStar a task and it joins Today. Everything else stays out of sight until tomorrow.