World Changers.

Fieldnote is an Android-first crop-health triage tool for smallholder farmers in Nigeria. A farmer selects a crop, uploads a leaf photo, and records observations in Hausa or English. Meta Muse Spark considers the image alongside the crop stage, location, and farmer’s notes to suggest possible explanations, practical checks, and next steps. When details are unclear, it asks a follow-up question and updates its guidance based on the farmer’s answer. Fieldnote keeps dated visits, photos, observations, and advice in an on-device casebook, with action checklists, recheck reminders, and an optional photo-inclusive PDF for extension workers. Farmers can save cases offline and retry analysis when connectivity returns. Inspired by my grandmother’s experience as a soybean farmer, Fieldnote aims to make timely first guidance easier to access while clearly presenting AI advice as uncertain, not a confirmed diagnosis.