Yeah I am so accustomed to use Things3 on my Mac. It is very critical for my workflow to use Custom smart filters like:
1. Inbox: collect all new emails, tasks that I capture. So I could quickly go back later to organize those items to properly schedule them
2. Unplanned: quickly identify only those items don’t have a date assigned.
3. Overdue: Those I missed and quickly catch up to complete them
4. Mobile: those items I don’t need my PC to do. So I could get it done like sitting in an airplane or waiting for a taxi.
I need to spend at least much more time to do these in To Do and so much context switch to look through the not relevant one to “hunt” for what I needed and could do in between meetings. That degraded my productivity significantly. 😒