I tracked down the name of the wonder app; it is called mellowflow and the reviews are SCATHING;
Following up on the Reddit forum, I've come to the sad conclusion that my gut feeling of 'if it looks too good to be true, then it really is too good to be true'. My advice; stay away, and just stick at lesson no 1; 'tidy three things in your line of sight'.
Sadly, for tidying up and keeping it tidy, there's no way around actually... tidying! There doesn't seem to be a magic method, especially for butterfly brains like me.
I do try to;
Set small, quickly achievable goals, like 5-10 mins, or one surface, or one task at a time.
Take time to gloat and congratulate myself on the little successes.
Never, ever, berate myself if I don't manage to do 'it', whatever 'it' is.
Never push myself too far beyond what I am already able to do.
Switch between types of tasks fairly frequently.
These have all come from the way I've learned to teach piano over the past 40 years, the main idea being to try and always
Build upon successes; start with a low bar and raise it slowly.
Associate the activity (even scales and sight reading!) with positive emotions.
Avoid all negativity, crossness, tension, distress in learning.
Gamify Just about everything.
Constantly cheer oneself on.
Now, what three things can Iput away next? Oh dear, I'll have to find somewhere to put them first...