Observed arrival · 2026-11-02
DEV.B: community disaster warnings for low-signal conditions
DEV.B presents a free Android and iOS app for community hazard alerts, designed to relay warnings over Bluetooth when mobile service is unavailable.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Communities facing hazards and unreliable mobile service
- Worth noticing
- Reports need several nearby confirmations before escalating; coverage still depends on how many people install the app.
Field notes
The page lays out four alert states: report a hazard, collect nearby confirmations, issue an amber prepare warning, then a red confirmed-danger alert. Reports can include a photo, while the site says only approximate location—not the reporter’s name—is shared. It describes Bluetooth mesh relay with internet and SMS used when available; actual reach is explicitly dependent on local app adoption.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
◉HumanPersonal, local, civic, or handmade
One card from the complete issue