CallFire IVR
8.0#3 in sms marketing softwareFrom $99 a monthFree planAndroidiOSWebAPI
VisitCallFire IVR suits organizations that need automated call routing or touch-tone phone interactions for surveys, reminders, payments, polling, or emergency information. It may suit teams that want to design flows visually or with XML and analyze recorded call responses.
You want what its maker publishes above — check its page for the details.