A free program for Android, by Nuts Technology.

Water Reminder – Health and lose weight is a simple and user-friendly app that helps you to keep track of your daily water intake. It also provides you with a personalized record of the amount of water you have drunk. This is a very useful tool for those who want to lose weight, as well as for those who want to keep an eye on their fluid intake.

To use the app, you need to enter your age, gender, and weight. You will also need to enter the number of servings of water you drink in a day, as well as the number of glasses you drink in a day. Once you have entered all the necessary information, you can set the start and end time of your reminders.