365days Push-up is a push-up training app designed to help you strengthen your abs conveniently using your iPhone. The app boasts being ranked #1 in the AppStore for Healthcare & Fitness in 2 countries and in the Top 10 in 33 countries, showcasing its popularity and effectiveness.

Users may find the default settings of the app to be on the lower intensity side, especially those with existing strength levels. It's recommended to download the app to assess its suitability for your workout needs. Additionally, the app offers a Membership feature for Athlete users, providing access to exclusive courses like Athlete, Basic, and Student at varying subscription prices.