RemindAnother integrates with the Google Calendar to allow you to send as many SMS text messages to as many people as you want, every time a designated Calendar reminder (alarm) fires off. The current implementation of the Google Calendar does not allow you to send an SMS message to any phone number other than the (one) verified SMS phone number in the settings.
RemindAnother can be used to schedule a text message reminder to remind anyone else about anything at any time. You can use it for birthday reminders (reminding kids or spouses about OTHER people's birthdays, anniversaries, etc.)
As long as RemindAnother is installed on you Android phone, and as long as the phone is turned on, it will work. (There is a way to deactivate it through the settings dialog.) The app doesn't even have to be running in the background to work! It just has to be installed. Just set up your reminders and forget about it.
Note that we do NOT require access to your Google email user ID or password. The app pulls the calendar data directly from your phone, so you do not jeopardize your account security by using this app.
Normal SMS text message rates apply. In other words, these text messages will be sent from your phone, so if you have 200 text messages per day that you've paid for, then having even 50 events a month would barely effect your usage allowance. Just remember, for each alarm and each entry you make, a text message will be sent. How this works is explained in the app instructions that come with the app.