Streak has no accounts
Everything Streak saves (your habits, history, moods, notes, XP and badges) lives only on your phone. We don’t have a copy.
Open a habit and tap ✕ next to any log. To delete a habit and its history, open it, tap ⋯ and choose Delete habit.
Go to Settings › Delete all my data, or uninstall the App. Remove any Streak widgets from your home screen too.
There is none. Streak doesn’t send your data anywhere. Videos you saved to Photos or shared to other apps stay there until you delete them.