First download the app and set it as the default messaging app for your Android.
Next, select Upgrade to Pulse SMS+ in the navigation drawer menu to set up an account. In earlier versions of the app you may need to go to the Text From Any Device.
After the account is set up. you can log in to the web app or any of the Pulse SMS+ platform apps and start texting with all your devices.
Log In now.
To get started, just open the Pulse SMS app on your Android device and select Upgrade to Pulse SMS+.
If you see the My Account section in your app menu, then you already have an account.
If you need to reset the password on the account follow the instructions found here.
Pick your plan to set up an account. The subscription option will provide you with a free 7-day trial, through the Play Store.