A seven-day sprint to help NGO Arredondar engage new retailers through a focused landing page, website CTA, and an onboarding flow rooted in real user research.
Arredondar helps shoppers donate the cents left over from purchases, turning tiny moments into real money for partner NGOs.
The challenge wasn't the donation model. People got the idea and liked it. The friction was explaining it clearly to retailers who might join in.
For a seven-day Tera UX bootcamp sprint, our team got a clean brief: an experience that helps retailers understand, trust and join the movement.
Seven days. Five people. One real client.
Competitors were loudly asking for action. Arredondar was asking quietly, and people weren't hearing it.
We started with a CSD matrix and kept updating it all week as assumptions turned into findings.
Benchmarking flagged a clear pattern: donation platforms put strong calls to action at the center of the experience. Arredondar barely surfaced theirs.
Research backed the opportunity. Surveys showed 49% preferred donating via round-up, and 89% were comfortable giving up to R$0.99 per purchase. Interviews with retailers exposed the real issue: unclear onboarding.
The problem wasn't willingness. It was confidence.
Rebuilding the entire experience would have been ideal, but the timeline forced prioritization.
So we built an MVP targeting the highest-friction moments: a stronger homepage CTA pointing into a dedicated landing page, simpler onboarding, long forms replaced by quick lead capture, and CRM automation for the rest.
Testing surfaced friction in scroll and form complexity, which we simplified further. The experience stopped being about collecting information and started being about creating momentum.
Outcomes ✦ The Numbers
What the system unlocked for users, for teams, for the brand, after launch.
Research validated strong interest in the model.
Behavior aligned with the platform proposition.
Research, synthesis, prototyping, testing and delivery compressed into one sprint.
What’s Next ✦ Beyond the MVP
With more runway, three parallel tracks would compound engagement for retailers and end consumers alike.
Expand awareness beyond retailers and educate end consumers.
Provide partners with impact visibility and communication tools.
Create integrations allowing retailers to connect donation flows faster.
The Team
Gratitude to the cross-functional crew that made this one real, and to the testers who kept us honest.