Ever since its launch, WhatsApp has had two business models on paper: you pay for the app on iOS or Blackberry (that has changed a long time ago when the app went free) or you get the first year free and you have to pay $0.99/yr afterward. However, that latter model was never put into action consistently. Despite having used the messenger for more than 6 or 7 years, I was never charged once and neither have any of my friends and relatives. Whenever the expiration date approaches, we get a small pop-up telling us that our service has been extended for another year and that'd be it.

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