CalJ

Smart Jewish calendar with accurate times and helpful tools

CalJ is a focused, feature-rich Jewish calendar designed for anyone who needs reliable halachic times and dates at their fingertips. Rather than being a simple date converter, it feels more like a compact Jewish timekeeping companion.

At its core, CalJ offers detailed Shabbat times for any city you choose, with the ability to save multiple locations. That makes it especially useful if you often travel, have family abroad, or just like to prepare early for Shabbat and festivals. The perpetual calendar is another strong point: you can jump to any year in the future and instantly see Yom Tov dates, ideal for planning vacations and family events around the Jewish calendar.

One of the standout tools is the cross-calendar conversion between Gregorian and Jewish dates. Whether you are researching a historical event or checking an old family document, CalJ can quickly tell you the corresponding Jewish date and vice versa.

For day-to-day religious life, the app includes comprehensive Zmanim: from earliest time for Tefillin to deadlines for Mincha or burning Chametz, tailored to your location. It also bundles key texts such as Birkat haMazon and the siddur for Mincha and Arvit, conveniently highlighting special inserts for Chanukah, Rosh Chodesh, and other occasions so you’re less likely to skip a paragraph by mistake.

Rosh Chodesh reminders and follow-up prompts for Birkat haLevana add another thoughtful layer of assistance. The ability to record birthdays and yahrzeits (Azcara) and have them recur annually with optional alerts rounds out the package, making CalJ helpful not only for ritual observance but also for family remembrance.

Those looking for in-depth study tools or a full siddur will still need separate solutions, but as a practical, time-focused Jewish calendar, CalJ is impressively complete and dependable.