March 1, 2025
Zalta: disaster preparedness that fits your household
A PWA for personalized emergency checklists and plans—earthquakes, hurricanes, floods, and fires—so households have actionable, categorized steps instead of a generic PDF in a drawer.
Context
Many families know they *should* be prepared, but default checklists are generic and easy to ignore until the news cycle spikes. I wanted Zalta to feel like a practical, ongoing companion: pick your hazards, get structured, categorized items you can actually complete, and keep the plan on the phone where people are when it matters. The public site positions Zalta as a disaster preparedness checklist experience—personalized, not one-size-fits-all.
What we built
Zalta helps households build readiness for earthquakes, hurricanes, floods, and fires (and the cross-cutting “home base” needs that apply everywhere). The UI is built around smart, categorized, actionable items so progress is visible, not a vague sense of “we should do something.” I integrated PWA patterns for install and offline-tolerant use where appropriate, and weather- and map-related hooks where they improve situational context—always secondary to a clear preparedness checklist users can work through on any day, not only during an event.
Stack and architecture
React and TypeScript keep the client predictable and testable. Supabase backs accounts and user-specific plans so a household can save progress across devices. The architecture favors fast iteration on checklist content and categories so new hazard types or regional nuances can land without a rewrite.
Decisions and tradeoffs
Preparedness products can feel fear-based; I designed tone and flow toward empowerment and small wins. I also avoided turning Zalta into a raw news product—alerts and maps support readiness, not doom-scrolling. That boundary keeps the app useful when anxiety is high and attention is low.
Outcomes and learnings
For Zalta, the lesson is the same as other consumer tools: retention is habit, not a one-time install. Ongoing work focuses on making completion feel achievable and regionalization of hazards and copy. The goal is simple: if someone opens Zalta once a month, the household is measurably more ready than a forgotten PDF.
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