A free app for Android, by FutureApps.

Audio Reminder is an app that can remind you with a text-to-speech (TTS) alert, for all the actions you have to perform, like taking a pill or having a drink of water.

You can customize the text to speech and the accent to your preference. It can also work as a simple note-taking app. You can write down what you need to remember and then, at the appropriate time, you will be reminded of it by the app. You can also add a reminder for the next time you are in that situation.

It can also work as a reminder for any future event you need to prepare for. For instance, if you need to do an important call or an important meeting, you can set a reminder for the day or time, and the app will remind you of it.