OU Kosher is a free Android application developed by Kosher GPS that serves as a comprehensive guide to all certified kosher products. The app also includes a hotline for general queries, alerts for newly certified products, and a list of kosher products for Passover.

The app's interface is user-friendly, with easy navigation. The product search feature allows you to search for specific products, and the results are displayed with all the necessary information such as certification details, ingredients, and allergens. The Passover section is especially useful, as it provides a list of Passover-approved products, making it easier to plan for the holiday.

One of the most convenient features of the app is the hotline button that connects you directly to the OU Kosher question and general information hotline. This feature alone makes the app a must-have for anyone who keeps kosher and wants quick and reliable answers to their questions.

Overall, OU Kosher is an excellent resource for anyone who wants to keep up-to-date with the latest certified kosher products and information. With its easy-to-use interface and helpful features, this app is a must-have for anyone who keeps kosher.