This is the basic idea, but I would like to hear from you: What would you expect from a to-do app?
Oh BTW maybe give my wife's voice to it.
For me there are three major emotions that get in the way of task completion: excitement, boredom and anxiety.
Excitement is usually for some other task. I'm working on my tax return and I think about upgrading my washer/drying. Suddenly I'm researching all the different types, the best deal on one, the history of the washer/dryer. It might be a task on my to do list somewhere, but I was driven to do it by the excitement.
Anxiety is a tricky one. If I'm writing something like an email anxiety often gets the better of me. What if this isn't the right way to do it? What if it comes off as rude. This ties in to perfectionism too.
Boredom is usually overtaken by one of the other emotions, but sometimes it appears on its own. I've got to input these numbers into some old, janky piece of software. It's probably not that hard or long of a task, but it feels so pointless. I'm just wasting so much time doing this task when I could be doing something more efficient and more meaningful.
If you can solve these emotional issues then pretty much any todo list app (or just a notebook) will be fine.
If you can manage your attention/motivation well enough to make detailed to do lists, why can't that be applied to the urgent task at hand, to completion.
If you do the ADHD questionnaire one of the major indicators is how many projects are 99% complete.
A TODO list just catalogues these 99% complete problems until they become cognitively crushing to think about resulting in a need to escape/avoid the list, resulting in eventual burnout.
> time until a deadline
This is stress based motivation, and stress tolerance is a depletable resource that once depleted results in devastation.
I am suspicious of anything mental health that doesn't market itself as evidence based. Do you have any evidential basis behind the TODO app? Are any of your ideas evidence informed?
Why not read through several ADHD help/workbooks or read through treatment protocols and try to app-ify them?
* Put my shit away.
That's it. The number one issue I see with ADHD, and this only really applies to extreme ADHD, is a complete inability to remember to either put things away or to remember to take your things with you. Consider it casual unintentional abandonment of everything you own one item at a time.