🪢Tzitzis, tefillin and tallis

These are the mitzvos that live entirely in the hands. A man does them the same way every morning for forty years and never thinks about them — until he is in a hotel, or he is sitting with a boy who is learning, or something is wrong with a pair and he has to look at them properly for the first time since he got them.

Lechem carries the practical part: what is checked before you put them on, what is said, in what order, and the things that come up rarely enough that nobody remembers them — a strand that has come apart, a knot that does not look right, what to do when you are travelling.

It is written for the person doing it, not for a beis medrash. Plain steps, in order, with the reasoning kept short and out of the way.

This is halacha, so the app carries its own line here: Lechem is a helper and a reminder, never a ruling. Where the practice differs — and on tefillin it does, a great deal — Lechem names the difference and sends you to your Rav rather than picking a side for you.