About Valentina
Valentina Castro is a senior UX researcher who has spent over a decade studying why people abandon the tools meant to help them. At The Calorie Guardian she times every logging path, scores onboarding, and judges whether an app’s charts actually help someone make a decision.
She runs timed logging tasks — photo, barcode, voice, and manual — across testers of different ages and tech comfort, then measures how long each common meal takes to record. She also submits real support tickets to every app and tracks how, and whether, they respond.
Valentina is the team’s advocate for the less tech-savvy user, and she pushes back hard on cluttered dashboards dressed up as “powerful.”
What Valentina tests Times logging tasks, scores chart visualization, and audits customer-support response.