The KolBo Zmanim app is pre-installed on every Kosher iPhone. It uses your device's GPS to compute exact halachic times for your current location — and it refreshes every day automatically.
What it shows
Alot HaShachar
Dawn — the earliest permissible time for talit and tefillin.
Neitz HaChamah
Sunrise — optimal time for shacharit.
Sof Zman Kriat Shma
Deadline for morning shema, per Magen Avraham and Gra.
Sof Zman Tefila
Deadline for shacharit, per Magen Avraham and Gra.
Chatzot
Halachic midday — turning point between morning and afternoon.
Minchah Gedolah / Ketanah
Earliest and preferred times for mincha.
Plag HaMincha
The transition point for early Shabbat candle-lighting.
Shkiah
Sunset — start of bein hashmashot.
Tzeit HaKochavim
Three-star nightfall — end of bein hashmashot, start of the next halachic day.
How it works on your Kosher iPhone
Zmanim uses your GPS location, so the times are correct for wherever you physically are — home, work, traveling. No ZIP code entry. No "nearest city" selection.
The app refreshes daily, showing today's zmanim at the top of the screen. It also shows tomorrow's times, so you can plan ahead. Shabbat candle-lighting, havdalah, and chagim are highlighted in advance.
For travelers: the app detects when you've crossed into a new timezone and recomputes everything automatically. Land in Eretz Yisrael, and your zmanim update to Jerusalem time before you've left the jet bridge.
Integrated with the rest of KolBo
The zmanim widget appears in your siddur, on your home screen (if you add it), and in the Shabbos Planner when calculating candle-lighting. One GPS source, multiple tools — all synchronized.