How to see the completed tasks?
when used Astrid I like about him Feature: All that execution - crossed.
1. We see progress
2. We see the job done (sometimes need to see something)
3. You can cancel accidentally deleted
And when you're performing a simple shakes up the phone and all leaves
If your tasks are parent tasks, then completing them will indeed remove them from the list although on mobile, when you complete them, as long as you don't change the view and go to a different project, you will see them crossed out, can tap on them and un-complete them.
If your tasks are sub-tasks, then they will stay completed on the list until their parent task is completed.
Unfortunately, it's not possible to view a detailed completed task list on mobile right now, but we'll add such option in the future.
On the web-version, you can view completed tasks by clicking on the icon in the bottom-right corner when you enter a project or, with Todoist Premium, click on the Karma score in the top-right corner, go to "View All Completed" where you'll see all your completed task sorted by time and you can filter this list by date, project or label and also visualize your productivity.
Feel free to check it out with Todoist Premium. If it won't meet your expectations, you can ask us for a full refund within 30 days of purchase.
One comment I have on the "View All Completed" display is that tasks against archived projects show an "Undefined" rather than the actual project. If I'm trying to remember what I did last week and have archived the project this can make it difficult.
Thank you for your report, we'll look into fixing this.