the onoff App story ONOFFAPP OÜ wanted to develop a free mobile app which would enable subscribers to add multiple numbers to any regular SIM card, on any Android or iOS smartphone, instantly. Their aim was to offer app users the ability to subscribe (or unsubscribe) to as many numbers as they wanted, at any-time, for a one-off price, across a multi- country environment. They also wanted to create innovative Voice/SMS bundles and packages. ONOFFAPP OÜ were looking for an experienced partner to help them onward develop their innovative proposition to provide a realtime pre- pay online charging solution, in very fast the challenge providing unlimited phone numbers on a sin

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