Observed arrival · 2026-10-05
GRAT — Mountain weather, judged by route risk
A decision-support app for climbers and hikers that combines forecasts, official warnings, station readings, and phone barometer data into a risk level for a location and altitude.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Climbers and hikers checking mountain conditions
- Worth noticing
- Route grade T1–T6 changes wind thresholds; missing readings stay “—” rather than being treated as zero.
Field notes
The described Companion Mode rechecks conditions every 15–20 minutes during a walk, logs checks and alerts, and lets users mark alerts appropriate or unnecessary to calibrate thresholds. The Apple Watch app is described as displaying the last verdict and how old it is; the page says the watch computes no separate risk score. It also states that alerts stop when the app is closed.
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
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