I love this little 12 week fit journal. It's the perfect size and has all the components that a person would need to stay healthy and on track! Before/after photos, measurements page, goals page, motivational quotes you can refer to when needed, and of course daily tracking including food, sleep, water, mood, workouts, and a notes section.
I think phone apps are an ok way to track but there's something about writing things down yourself with a pen and paper that keeps me honest and it's way easier in my opinion. Love this!