- Audience
- US English iPhone shoppers who coordinate groceries with a partner, family member or roommate.
- Control
- The captured single-phone grocery opener after access labels are checked.
- Treatment
- Replace only frame one with the same grocery task shown as a verified update across two participants. Keep the remaining frames, metadata and offer fixed.
- Method
- Verify sharing, offline/reconnect behaviour and feature entitlements. Run randomized comprehension research at store size and eligible App Store product page optimization.
- Primary measure
- Correct understanding of shared-list changes in research and platform-reported download conversion in the store.
- Guardrails
- No belief that a delivered grocery order is created by checking an item or that every premium feature is free. Monitor actual list creation and sharing activation if instrumentation is available.
- Decision rule
- Choose the useful effect, sample requirement and observation period from baseline data before launch. Require readable item text and no material increase in access confusion; keep control if inconclusive.
- What could muddy the result
- Household platform mix, existing users inviting partners, grocery seasonality, connectivity and plan promotions can affect behaviour.