Challenge is a free lifestyle application for Android developed by Tamás Forray. This program aims to assist users in following their diet and maintaining proper water intake by providing a range of features. The app includes a section for the user to select a Challenge diet and provides guidance to follow it. Additionally, users can read tips and advice from other users in the "Community" section. Challenge is recommended by Kasza Tibi and Mankershop.hu.

Challenge is an easy-to-use application that helps users maintain their diet and water intake. It provides a range of features that are useful for people who are looking for a healthier lifestyle. Users can select a Challenge diet and follow the guidelines provided by the app. The app also includes a feature to track water intake and reminds users to drink enough water throughout the day. The "Community" section is a great way to connect with other users and share tips and advice. Overall, Challenge is a great app for anyone looking to improve their health and lifestyle.