Fertility friend has an app too
I now put my temps & cm into the app and sync it to the website.
I charted temps everyday for quite a long time before I felt I was familiar enough with my body and cycle that I could change to temps only on certain days. I wouldn't recommend it in the beginning - not until/unless you see and become familiar with a consistent pattern. My 2 year old son loves my bbt so now it's easier for me to hide it for part of the month and only take it out for a week or two