At a Thursday anniversary event in Monsey, 18-year-old creator Ushi Hess said the app has logged more than 100,000 tefillin uses in about a year.
Feder's added $50 sponsorship doubles the daily cash prize immediately, with organisers saying the app aims to help boys stay consistent through reminders, inspiration and raffle entries.
The celebration featured music, speakers and stories about the app's impact, as supporters highlighted its role in encouraging boys to put on tefillin every day.
When an app offers cash for prayer, does it build lasting faith or just a habit of logging in?
As ancient rituals go digital, what is lost when community practice becomes a personalized notification?
Can a spiritual app become a high-tech way to hide from, rather than heal, emotional pain?