while my perception is still fresh

When adding a newly created task to a new project it isn't obvious that one has to tap on Enter
the name of the newly created project should replace the "Cancel" button (imho)

selecting dates might be way easier: tap on the setting and slide with a finger up or down from hours should make it obvious that you're changing hours...

12 : 00 - 12 of June 2015

People hate Todoist for awkward data entry. you excel at it and it could be even more exciting

I could do a Russian localization in in exchange for a lifetime Premium subscription )))