Dear You is a private letters app for iPhone. Seal a letter to your future self for a week, a month, a year, three or five years; it stays locked until its day, and then you can write back for a later you. Each day it also opens one original letter for what you need, encouragement, calm, courage or gratitude, ending with one small step. Face ID lock, printable PDF export, no account and no ads. Not a mental-health service.