Thx guys! I'm with you. An exel list is pretty useful. I just don't wanna work with it on my phone but I'll use it on my Computer.

Thank you armoured, also for explaining the structure.
I'll check out the IRCC forms for citizenship.
I've found a day counter app at the app store. I find it usefull. Its a simple thing: You just fill in date and time, and it will show the days. I guess it works like the exel operation in the background.
Good news: its for free. The bad news is, its in German in did not found out how to change the language.