PlainWeather - Weather Safety

EqualInformation, LLC

In-app purchases

About this app

Existing weather apps need a live connection to tell you the forecast. PlainWeather is different: it's the offline safety-action layer that works when the signal drops — exactly the moment a severe-weather app matters most.

14 hazard action guides, free forever:
Step-by-step before/during/after guidance for tornado, hurricane, flash flood, wildfire, blizzard, heatwave, lightning, hail, dust storm, storm surge, tsunami, avalanche, rip current, and derecho — including a Myths & Mistakes section per hazard debunking real misconceptions (the overpass "shelter" myth, opening windows for tornadoes, and more).

28 safety calculators & reference tools:
A live lightning flash-to-bang countdown, heat index, wind chill/frostbite, WBGT work-rest estimator, dew point, snow load, Beaufort wind scale, sunburn time-to-burn, a plain-language Watch vs. Warning explainer, regional seasonal risk profiles, air quality and UV guides, marine advisories, and prep checklists for families, vehicles, power outages, and evacuation routes.

11 activity go/no-go guides:
Weather-driven decision checklists for hiking and outdoor work, farming frost windows, fishing and boating conditions, cycling and running, construction stoppage thresholds, school outdoor-activity heat guidance, your daily commute, and road-trip and travel planning — built for outdoor workers, parents, commuters, and travelers alike.

Built for the moment the signal drops:
• 100% OFFLINE for every safety-critical feature — no network required on any path that keeps you safe.
• OFFLINE ALERT RELAY (optional, off by default) — passes a cached warning to nearby PlainWeather users over Bluetooth/Wi-Fi Nearby, with zero internet and zero server.
• KIDS' & ELDERLY MODES, icon-first low-literacy mode, and read-aloud guides for every hazard and activity.
• FULL SPANISH TRANSLATION, with more languages planned.
• A printable/shareable household safety card for anyone without a smartphone.

Your information stays yours:
No account, no ads, no analytics, no tracking. The only optional network call fetches your free NOAA/NWS forecast when you have signal — cached locally the moment it arrives, with a visible "last updated" time.

PlainWeather Pro (optional, never safety-critical):
Every hazard guide, every safety tool, and every go/no-go checklist is free, forever — full stop. PlainWeather Pro is available as either a one-time purchase or a monthly/annual subscription — your choice — adding convenience depth only: a Historical Worst-Case Reference (how bad each hazard has actually gotten, with real examples), Pollen & Seasonal Allergy Notes, an Event & Wedding Weather Planner, and Gardening Frost Protection guidance. A lapsed or cancelled subscription never removes anything safety-critical. A Family/Household Unlock covers everyone in your household, also either one-time or subscription — same features, one price. And if you'd just like to support the project, optional Supporter tips (one-time or a recurring monthly tip) are available too, completely separate from Pro and never gating anything.

IMPORTANT: PlainWeather provides general safety guidance for informational purposes and is not a substitute for official emergency instructions. Always follow guidance from your local emergency management authorities.

What’s new

Initial release of PlainWeather: 14 offline severe-weather safety guides, 28 safety calculators, and 11 activity checklists — all free, no signal required. Optional Pro unlock adds convenience extras; every safety feature stays free, forever.