Check/uncheck all items

[iexos]

The title says it all, just an option to check or uncheck everything in the list :) especially useful for recurring lists

[backtabber]

I just discovered this app, and it has the simplicity I was looking for, basically an interface for a text file for toggling tasks. I use the app to manage a list of daily chores. At the beginning of a new day, it would be quite handy to simply toggle all items as undone. As it is, I open a text editor and do a global replace on the double slashes. Doable, but annoying.
Is this app still under active development?