Twelve things Reva will not build, each with what it claims to do for you and why it is out. Streaks and progress bars. Time reclaimed. Brain training. Blue-light filters. Cold-water urge breakers. Dopamine resets. Self-control as a trainable capacity. Notifications designed to bring you back. A dashboard that rewards checking. A queryable view of your own gate data. Comparing the days you did your steps. Under-13s.
If the evidence changes, this list changes. If you think we've got one wrong, tell us and send the study.