The iOS app jumps to today when leaving the app. Sounds like a good idea, but is a pain when using it. At least make a button for jumping back to today (like in the iOS calendar app).

In case you don't see the problems, let me list a few I experienced:

1. You add a meal for yesterday and have to google an ingredient? App jumps to today and therefore adds it to today’s calories.

2. You are in any other day and tap the taskbar at the bottom of the screen, like accidentally while typing? The app registers the slightest touch as leaving the app, you are in today's page.

3. You want to import a week of workouts from a third party app? Every time you take a look in multitasking view, you can jump back from today, to the day you want to be.

And the list goes on... but interestingly, if you jump to future days the app does not jump to today after leaving. Don't know if that is intended, but I prefer having the choice of using it or not.