Founder Michelle Kennedy, who helped set up the dating app Bumble, said that Peanut would look at raising fresh finance next year to help it scale up and meet demand.
Aside from speeding up its growth, she said that any money raised would be used to develop more features for its app.
It has more than 350,000 users, primarily in the US, and helps mothers make new friends, find nanny share arrangements and start businesses together.
It also has users in Canada and the UK. Typically, users are aged between 25-34 and primarily use their smartphones to stay in touch.
Kennedy explained that she founded Peanut shortly after becoming a mother and found herself without a support network of other mothers: “Peanut was born because I didn’t have one. I started thinking about my experience with dating apps, my thinking was how can we modernise the process?”
Peanut is backed by Hollywood star Ashton Kutcher’s investment firm Sound Ventures and Sweet Capital Investment, one of the original investors in Candy Crush creator King Digital.
Kennedy and her business partner Greg Orlowski, a former Deliveroo executive, launched the company in February 2017.