Return

Stored value

Effort: High

What to notice

As saved filters and favorites grow, the recommendation quality meter rises.

How to build it

  1. Use what people saved, rated, and set to shape their next visit.
  2. Show what was used.
  3. Allow export and deletion at any time.

Measure

Main metric
Return and retention rates
Guardrail
Requests to delete or export data

When it backfires

Locking data in to prevent churn works against users.

Theory behind it

Hook Model

A product model where cycling through trigger, action, variable reward, and investment turns use into habit.

Practitioner framework

IKEA effect

Things people build themselves feel more valuable than the same things made by others.

Limited evidence

Playable demos

Try the same mechanism in a playable demo.

Zen Garden

Terrarium