"The application accesses your GPS capability on your phone and relays it to the user - in this case the police.
"This is the second such successful use of the programme by Waikato police since its introduction and we understand other emergency services have had several successes as well."
As well ensuring the safety of the missing woman faster, the app also reduced the amount of time spent searching by volunteer Land Search and Rescue Teams, Mr Pitchford said.
Police relied heavily on their contribution and the goodwill of their employers and families, he said.
"Anything we can do to ensure a speedy and safe resolution of missing person incidents while also reducing the call on volunteers' time is a real positive.
"At the same time, police advise against going into the bush by yourself and even if you don't intend staying overnight, consider taking warm clothing and provisions with you in case the unexpected happens. Obviously having a reliable form of communication such as a GPS capable smartphone is important as well but technology doesn't always work and having some basic bush skills shouldn't be disregarded."