A free program for Android, by Sine Group Pty Ltd.

Sine is a free app that provides a safer, more convenient way to check in and out at your favorite sites.

This is a free app for Android that allows you to:

• Check in to Sine sites for free
• Store your data for future use
• Save time and go paperless
• Use the app on your phone or tablet
• Manage your Sine account

Download Sine Pro and sign up for a free account today.

You can download it on your smartphone or tablet.

How do I sign up?

To sign up, you will need to create a username, password, and security question.

If you already have an account, you can log in with your credentials.