Directi has launched an app, Ringo, which allows users to make overseas calls without the Internet, Wi-Fi or carrier minutes at rates that it claims are about 70% lower than those offered by mobile phone companies and credit based calls over Skype or Viber.
“For casual users, the service will fly. But for the serious business user, its use remains questionable,” said Sanchit Vir Gogia, founder CEO at Greyhound Research. “Also, whether they will be able to guarantee voice quality when volumes peak is another matter.”
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