Sefiros takes you on a seven-week journey of spiritual refinement and improvement, providing you with practical techniques to maximize the growth potential inherent in each of the forty-nine days of Sefirah. In this version, read all 49 days of growth. Download Sefiros Grow Today. Brought to you by Rabbi Yaacov Haber and Rabbi David Sedley, this app gives you a pleasant and intuitive way to count the Omer and make your day more meaningful. 'Sefiros Grow' brings you an entire Sefiros book combined with action alerts from the book that enhance your day with spiritual insights into our daily lives. With Sefirah reminder that is built-in inside the app, using your device's GPS to calculate time to count the Omer there is no more forgetting to count the Omer.