Lateral makes money through subscriptions, and users pay for the services through direct carrier billing - charging to phone bills - instead of credit cards.
OZChat has been sold via telecommunications providers Vodafone, Telecom, Optus, Telstra, Bell Canada and several other networks.
Lateral chairman Dene Biddlecombe said that in today's market conditions - tech stocks have plunged sharply this year as investor appetite for high-growth companies with big promises of future profit has slumped - it made sense to raise money from eligible investors rather than the public.
The company would "get some runs on the board" before raising additional capital through a share purchase plan with existing investors.
He declined to disclose financial figures but said the company was close to breaking even and he hoped it would be profitable within the next 12 months.
Chief executive Roger Grice said OZChat and Qikflirt had advantages over free services such as Facebook and the popular dating app Tinder, and users were prepared to pay for Lateral's products.
Co-founders Grice and Bob McAuley now own more than 60 per cent of Lateral.