Mandy Moore has responded to ex-husband Ryan Adams' apology over her abuse allegations, saying she found it "curious" he chose to do it publicly rather than privately.

Moore and six other women came forward in February last year, alleging the singer-songwriter had been guilty of manipulating and controlling behaviour.

In an open letter published exclusively by the Daily Mail on Friday, the 45-year-old musician apologisied for 'mistreating people'.

Actress and singer Moore, whose divorce from Adams was finalised in 2016, has now responded to the apology and revealed her ex-husband had not been in touch.

During an appearance on the US TV show Today, the 36-year-old This is Us star said: "It's challenging because I feel like in many ways I've said all I want to say about him and that situation, but I find it curious that someone would make a public apology but not do it privately.

"I am speaking for myself, but I have not heard from him, and I'm not looking for an apology necessarily, but I do find it curious that someone would do an interview about it without actually making amends privately."

Mandy Moore, pictured with Ryan Adams in 2012

After the allegations against Adams surfaced last year, his label Blue Note cancelled the release of his 18th album, Big Colors. He has not released any new music since.