Cellcast Android App Integration Estimated reading: 1 minute 902 views About Cellcast Android App Download our Cellcast Android app to send text messages, voice, letters, and more. Integrate SMS messaging and more with your Cellcast Android App account Send and receive SMS/MMS from AndroidSend text-to-speech voice calls with AndroidSend letters, custom postcards, and fax from Android Cellcast Android App pricing This integration is free. You only need to pay for the messages sent.