Zasder Weather
Weather the way you want it
Free · In-App Purchases · Designed for iPhone. Not verified for macOS.
Bring-your-own-backend weather app for AmbientWeather, Davis, AcuRite,
and 180+ station types. Now with an Apple Watch app + complications.
No ads, no tracking.
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.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Zasder Weather comes to Apple Watch!
• Watch app: your stations on your wrist — big current temperature, day
high/low, wind, a 24-hour temperature chart, and feels-like /
humidity / UV gauges. Works over LTE or Wi-Fi without your phone
nearby.
• Watch-face complications: current conditions in corner, circular,
rectangular, and inline slots.
• Pick-your-metric complications: put exactly the reading you want on
your watch face — temperature, feels like, dew point, humidity, wind,
or UV index.
• Zero setup on the watch: it gets your backend connection from the
iPhone app automatically (manual entry is there too).
• New wind unit: the Beaufort scale, by user request.
• Polish and fixes throughout.
The developer, Zasder LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Size
- 7.2 MB
- Category
- Weather
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Buy me dinner 34,99 €
- Buy me lunch 22,99 €
- Buy me a latte 5,99 €
- Buy me a coffee 0,99 €
- Provider
Zasder LLC
- Zasder LLC has identified itself as a trader for this app and confirmed that this product or service complies with European Union law.
- DUNS Number
144992268 - Address
3133 W Frye Rd Ste 101 Pmb 3044
Chandler Arizona 85226-5132
United States - Phone Number
+1 4808937890 - Email
info@zasder.com
- Copyright
- © 2026