"New Zealand has more than 600,000 recreational fishers who are mad about the sport," Craig said.
"And we've got more than four million other Kiwis who don't go fishing but would probably like to think that communal resource is being fished responsibly."
The app has been welcomed by community fishing organisations including iwi groups such as Te Korowai, the Kaikoura Coastal Marine Guardians, whose facilitator Peter Lawless said it was essential to getting good information on recreational fishing on the Kaikoura coast.
"We are encouraging all our recreational fishers to use the app. The kids in our Curious Minds programme have been helping and showing their elders that the new technology can be friendly rather than frightening."
Craig said the next step was to work with users to develop the fishing diary section, so each user will have their own easy access records that they could look up and see where they were fishing, bait they were using, weather condition, tide times - at the very same time each year.