The app was designed to give farmers more time with their families by making the business more manageable.
Police have urged homeowners to be cautious of anyone calling uninvited.
A man sustained injuries to his arms, thighs and hands in the attack in Newcastle, County Down.
The two men have been charged with attempted murder and possession of an offensive weapon with intent to commit an indictable offence.
The victim sustained serious injuries to his face, hands and legs in the assault.
There are concerns about the safety of swimmers due to the presence of the algal blooms.
Six fire appliances were sent to the scene of a fire on the Altnadua Road, near Castlewellan.
Eric Cullen, Cyril Cullen, and George Kirkpatrick were convicted of the murder of Francis Rice in 1981.
This year there have been 168 confirmed reports of blue green algae in Northern Ireland.
