The deal should also be good for Vodafone, aligning the mobile and broadband provider with one of New Zealand's most powerful brands.
The new app will no doubt also consume a fair whack of mobile data, which will benefit both Vodafone and its competitors.
However, the four-year Vodafone agreement isn't such good news for the Sky.
While the pay-TV provider has the broadcast rights for test rugby tied up until 2020, closer ties between New Zealand Rugby and a telco should ring some alarm bells.
That's because by the time those rights expire, close to 75 per cent of the country will be able to access fibre internet that's easily quick enough to stream live sports. A rights-holder like New Zealand Rugby doesn't need to partner with a traditional broadcaster to reach fans and could instead work with a telco to distribute it directly to homes and pubs across big parts of the country.
New Zealand Rugby would need to weigh up whether the cost of doing so - including the loss of guaranteed revenue in what Sky pays for broadcast rights - is worth it.
Sky also has production expertise and equipment that New Zealand Rugby would need to bring in-house or pay someone else to handle.
But if the new app and Vodafone relationship gets off to a racing start, it should make the rights negotiation process very interesting.