Zasder Weather is a clean, fast iOS app for personal weather stations.
It's "bring your own backend" — point it at your own server and your
station data is yours, end to end. No ads, no tracking, no subscriptions.
Three source types out of the box:
• AmbientWeather — your backend polls the AmbientWeather REST API
on your behalf and stores history in SQLite.
• Davis WeatherLink — cloud polling, or a tiny LAN poller next to a
WeatherLink Live for ~2-second freshness.
• Direct RF capture — a ~$20 LilyGO ESP32 board decodes AcuRite Atlas
(433 MHz) or Fine Offset / Ecowitt / Ambient sensors (915 MHz)
straight off the air — plus an optional discovery mode that picks
up LaCrosse, Oregon Scientific, AcuRite 5-in-1 and towers, Auriol,
TFA, and ~180 other station types. No vendor cloud at all.
Features:
• Multi-device dashboard — every station on one screen: current
conditions, feels-like, a 24h temperature curve, day/night sun
dial, and stat tiles for humidity / pressure / wind / rain / dew
point / UV.
• Charts — eight fields (temp, feels-like, humidity, wind, pressure,
dew point, solar, rain) over windows from 1 hour to 7 days, plus a
16-sector wind rose. Tap and drag to inspect any point.
• Alerts — thresholds for any field, per device or all devices,
evaluated on your backend — email and push notifications arrive
even when the app is closed.
• Apple Watch app — your stations on your wrist: big current
temperature, day high/low, a 24-hour chart, and feels-like /
humidity / UV gauges. Works over LTE without your phone.
• Watch-face complications — including configurable ones: show the
exact reading you want (temperature, feels like, dew point,
humidity, wind, or UV index) in corner, circular, rectangular,
or inline slots.
• Home-screen widget with your station's current conditions.
• Units — °F/°C, mph / km/h / knots / m/s / Beaufort, in/mm, inHg/hPa.
• A 7-day forecast pulled from Open-Meteo (free, no key).
The backend is open source under MIT:
https://github.com/volneydouglas/zasder-weather-backend
It runs free-to-cheap on Fly.io or in Docker on a Raspberry Pi. A
setup script (and a web planner at zasder.com/weather-helper) walks
you through it in minutes.
The app only communicates with the backend URL you configure in Settings.
Optional tip jar via Apple In-App Purchase — purely cosmetic,
nothing is paywalled.
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