The popular currency app XE appears to have crashed this morning as the global financial market reels from the after-effects of Brexit.

Both the app and its website stopped functioning properly, prompting unconfirmed speculation that it has been overwhelmed by traffic.

The firm which runs XE said it had been "pounded" by record-breaking levels of traffic prompted by the "unprecedented" event.

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In a statement, XE wrote: "XE has seen our single biggest day of traffic in the history of our company.

"In the hours after the polls closed, we've seen an increase of 1,000% over regular traffic levels.

"As of the time of writing, our usage continues to be many times greater than normal and has significantly eclipsed the levels we saw during the market crash of 2008. Brexit is clearly an unprecedented event."

The XE app allows users to get real time information about exchange rates. Its website also offers a money exchange service called XE Trade which and allows cash to be converted into different currencies and sent around the world.

Some 11,000 people use this service to "make global payments, send funds to family, pay international businesses, and even buy foreign real estate" every month.

It is not known whether this part of XE is in full operation today.

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Concerned people took to Twitter to share news of the apparent outage.

"You know things are f***** when XE is down," wrote one man.

"Why is XE down?" a woman asked.

"Is Brexit having a serious influence on world currencies at the moment?"

The XE website now appears to be back up and running, but people are still reporting problems with the app on Twitter.

The firm which runs XE is based in Canada in a timezone that's five hours behind Britain.

We have contacted XE for comment but it has not yet replied.

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