MUMS have taken to social media to warn of an app they say is leading to children being cyber-bullied.

Youngsters from Dorset are signing up to Sarahah, which lets users send one another anonymous messages.

The app, which was released in June, has millions of users. It is designed with the aim of allowing users to send and receive honest feedback about each other.

It can be used on its own, but also alongside other social networks, including Snapchat, Instagram and Facebook.

However, parents in Dorset have taken to Facebook and Twitter to warn that their children are being targeted by trolls who can leave nasty comments anonymously.

One said her 13-year-old daughter doesn’t want to return to school after being “badly affected” by comments left for her.

Another said she wept after her 12-year-old son showed her “nasty” comments made about him.

Jake Moore, Dorset Police’s cyber-crime prevention officer, has now spoken out about the website as part of a bid to keep children safe online.

He urged youngsters using the app to be kind, prepare themselves for any negative or abusive comments, keep it ‘friends-only’, block anyone abusive and delete the app “if it all gets too much”.

He also said youngsters badly affected by harassment or abuse online should get help to stop the cyber-bullying.

“If you’re sending feedback on Sarahah, be constructive and positive in what you say: honesty doesn’t have to be brutal,” he said.

“Treat others as you would wish to be treated.

“Think before you post.”

He urged anyone who wants to download the app to consider if it’s worth the “potential stress”.

“If you’re not sure if you’re ready, don’t install it,” he said.

“If it all gets too much, and you’re receiving hurtful comments, then get that app off your phone.

“You can live without Sarahah.

“If it’s left you feeling bad then speak to someone you trust.”

Parents and carers should try to keep up with the apps their children are using, and “stay curious” about technology, he said.

“You may not understand everything they’re using but they still need you to be their parent, to guide, advise and comfort,” he said.

For more information or advice, visit net-aware.org.uk/news/sarahah-news