mart Envelope AI is a budgeting app built around the classic cash-envelope method — but digital. Set a spending limit for any category (groceries, gas, whatever), then log expenses by speaking, snapping a photo of a receipt, or typing. You always see exactly what's left before you buy. No bank login required — ever. Nothing to link, nothing to expose. Your budget stays on your phone. 14-day free trial, then $4.99/month. cancel anytime