Hazman App

Set your Shabbos lights once. Hazman switches your smart lights — and now your thermostats — by the Jewish calendar: candle lighting, nightfall and every Yom Tov, worked out for your exact location. No more changing timers every Friday.

NEW: HEAT & AIR CONDITIONING
Thermostats in SmartThings, like Honeywell Home / Resideo, follow the zmanim too: "Heat to 72° two hours before candle lighting", "Cool to 74° on Shabbos morning". Each change shows on the calendar next to your light times, and you can see the room temperature and adjust it any time.

SEE IT ALL ON A CALENDAR
Every switch time for the weeks ahead, in English, Yiddish or both — with the parsha, Rosh Chodesh and Yom Tov marked. Tap a day to see why each time was chosen, and change it for that one day only. Print it for the fridge.

SET IT ONCE
"Dining room on 30 minutes before candle lighting." One rule covers every Erev Shabbos and Erev Yom Tov. Pick clock times or zmanim, weekly days, yearly or monthly Hebrew dates, or one-time dates — and skip any date you like.

YOUR MINHAG
Candle lighting and nightfall the way your rav says: presets for Satmar, Skver, Vizhnitz and Chabad, or your own minutes. Chutz La'aretz or Eretz Yisroel.

SHABBOS & YOM TOV LOCK
Choose per rule: if a light is switched by hand during Shabbos or Yom Tov, Hazman puts it back within seconds. After a power outage, everything is set right again.

TURN LIGHTS ON OR OFF ANY TIME
Not only schedules: switch any light, room or group right from the app, with one-tap buttons and home-screen widgets. Buttons can turn lights on for a set time.

SHARE WITH FAMILY & SHUL
Invite people by email — each gets their own sign-in, with only the locations, rooms, lights, buttons or thermostats you choose, and their own calendar. You decide whether they can only view the rules, edit them, or also create new ones.

NO APP NEEDED ELSEWHERE
Everything also works at hazman.app from any browser — at home, at the office or away.

WORKS WITH
Kasa and Tapo smart switches, dimmers, plugs and bulbs from TP-Link, and thermostats like Honeywell Home / Resideo — all connected through Samsung SmartThings (free). Hazman never sees your passwords.

TRY IT FIRST
Open the demo — a sample home with simulated lights. No sign-up, no devices needed.

GRAND OPENING OFFER
Free for up to 3 devices and 10 rules, for a limited time. No card needed.

Hazman is a tool, not a psak. Ask your own rav about using it for Shabbos and Yom Tov.

Hazman is independent and is not made, endorsed or supported by TP-Link, Samsung or Resideo. Kasa and Tapo are trademarks of TP-Link; SmartThings is a trademark of Samsung; Honeywell Home is a trademark of Honeywell, used under license by Resideo.

Recent changes:
Notifications: Hazman tells you on your phone if a scheduled light didn't switch, even after trying again. The 'Open Hazman' button in emails now opens the app.