What is the Hayom Yom?
The Hayom Yom book was compiled by the Rebbe, Rabbi Menachem Mendel Schneerson, of righteous memory, in 1942, upon the instructions of his father-in-law, the Previous Rebbe.
It is an anthology of Chassidic aphorisms and customs arranged according to the days of the year, and it has since become a beloved classic work and a source of daily inspiration.

A page a day
Each day of the Hebrew year has its entry, along with the day's Chitas: Chumash, Tehillim and Tanya. Many people read it every morning.
Reading it in the app
Hayom: Study brings the book into a daily routine: it opens on today's entry, in Hebrew or English, in the style you like, with the day's Tehillim one tap away and a widget for the home screen.

Questions
Who compiled the Hayom Yom?
The Rebbe, Rabbi Menachem Mendel Schneerson, of righteous memory, in 1942, at the instruction of the Previous Rebbe.
How is it arranged?
By the days of the Hebrew year, one entry per day.
Try it in Hayom: Study
Free on the App Store for iPhone and iPad. Requires iOS 15.1 or later.