This seems like a great app, if I could just make a suggestion for possible improvement:
I don’t smoke, but instead I vape. During the onboarding phase where your program asks how many cigarettes I smoke, and how much it costs, I had to make a guesstimate, and of course, the packs and savings aren’t going to apply to me at all.
My suggestion is that you create an option for how often one vapes, and how much a bottle of vape juice costs, and how long it lasts… or similar, or perhaps allow the person to skip the how many/cost option all together by choosing a Vape option.
Vaping is a huge thing nowadays, and although it is slightly safer, it’s still a nicotine habit. Your program can still be very helpful.