[iPad] Texting Program?

I'd like to be able to text my brother and son and a few others that don't use iPhones or iPads and I can't text from my iPad4 using 6.1.3. Does anyone use a reliable simple texting program I could use?
Thanks,
Dick

Sent from my ô– iPad 4
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Richard E Johnson, ScM, MD, DABA
RECMSOJ@OnlineOK.com
recmsoj1@icloud.com




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