Whether it’s automatic round‑ups to savings, proactive low‑balance warnings, or smart payment sequencing, the experience is the same: finance becomes quieter, not louder. But this shift places a new burden on founders and product designers; when a system starts acting instead of advising, trust becomes non‑negotiable. Users must understand: why the system did something, what data it used, how they can control or override it. This requires transparency, not opacity. It requires consent, not assumption. It requires explainability, not black boxes.