I've used sleek as my primary todo.txt UI for a while now, and I'm really happy with it. If you are interested in a simple, but useful way to put together a todo list in plaintext, the todo.txt spec is a great way to handle it, and sleek is by far the nicest GUI I've found.
About a week ago, I ran into a minor annoyance with an edge use-case that I have, and I wrote about it in the sleek github discussion page. Within 4 days, the maintainer of the project had a new build ready that fixed my issue. Nobody else said they needed it, but they took the time to add the feature I requested and now my workflow is that much easier.
I know not every project is like this, or can be like this, but there's no way that something like this would get added at anywhere near this pace in proprietary software. I, for one, am super grateful that software like this and the people that maintain it exist. Thank you.
Please check out sleek!
Cool, Obsidian didn't even cross my mind, thanks for the suggestion.
For mobile, just reading and ticking of existing items covers the main use cases for me. And sometimes adding new items too. That's soo cool that the Sleek Dev added support for arbitrary extensions. I love when FOSS Apps become interoperable on the same dataset like that. Yay for data portability :D
Time to try out Obsidian then