Your calls are important and you deserve premium quality.
The STi brand has served tens of millions of customers and STi World now offers high-quality calls in an easy-to-use app at the lowest rates available.
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The longer you talk, the more you save.
That’s why people who need to make longer calls prefer our pricing model and will prefer the STi World app over the competition.
An Example of Why You Should Choose STi World
STi World offers high quality calls to all the destinations of the world.
Don't call overseas with your regular mobile plan, use the STi World app instead for lower rates.
Easy to Use
Call from your contacts, create favorites or just dial a number from the app to save on any international call.
Easy to Reload
Add funds to your balance using all major debit and credit cards, PayPal and Venmo. To pay with cash, get an iTunes or Google Play card from any convenience store, or an STi World card from your international market, and use it in the app to add funds for calling.