Personal risk index
Not just air temperature — perceived temperature in 4 levels. An optional profile (age, weight/height, outdoor activity, health conditions) lowers the alert thresholds if you're more vulnerable to heat.
UV index & air quality
Alongside temperature and humidity: UV index (WHO scale) for sun protection, and air quality (European AQI) to know if today is fine for your lungs too, not just the heat.
Safe-window estimate
"You can stay out until HH:MM" instead of a generic bulletin to interpret yourself.
Adaptive hydration reminders
The interval tightens as risk rises — not a fixed timer for everyone.
Escalation alert
Notification, a three-tone chirp, and an amber Pip-Boy-style pop-up with hour-by-hour advice — only when risk actually worsens, never on first launch.
Nearest green space
The closest park, forest or reserve (name, distance, compass-driven arrow), one tap to get walking directions via Google Maps.
Three ways to pick a location
Current GPS position, search by name, or a point chosen by hand on an embedded map — useful for where you'll be working tomorrow, or where a relative lives.
Heatstroke first aid
One tap away: warning signs, what to do immediately, cooling measures, when to call emergency services.
No account
No ads, no data leaving the phone beyond the weather/map requests needed to work (Open-Meteo and OpenStreetMap — both keyless, no tracking).
