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War tensions have been ratcheted up as Kim detonated a hydrogen bomb after firing a missile over Japan.

North Korea has threatened the US with the “greatest disaster” as Trump hit back with his generals warning of “total annihilation”.

But with North Korea’s increasingly horrifying war talk, a new app designed to give you an early warning if you are in Kim’s blast range has been released.

Christian Lilley designed the Nukey McNukeface app by combining missile range estimates with a potential blast radius.

The 26-year-old told Daily Star Online about the new gadget designed to highlight that "the threat is real".

(Image: GETTY/PEN NEWS)

The software finds what population centres are in range and tells users if they’re close enough to be affected if one were detonated.

Mr Lilley, from Raleigh in the US state of North Carolina, said: “This started a few weeks ago when North Korea was threatening to nuke Guam.

“I was curious so I did a Google search for what their missile range was, and I was surprised by the results.

“In the US most people see North Korea nuclear threats as a joke. I wanted to make a simple fun way to inform people that the threat was real.”

(Image: PEN NEWS)

(Image: PEN NEWS)

He continued: “I started with US state capitals and country capitals. These cities show a 100km radius which represents the affected area from a nuclear blast.

“I took the best guess estimate on North Korea’s range from reading news articles. The main goal of the first release was to just show whether you were within their range.”

Kim has previously identified his nuclear targets in the US as California, Texas and Washington – which seems to match-up with the app’s estimates.

Christian, who works for software firm, Citrix, says the first update for the app will include other nuclear-capable countries and potential targets.

If the app is to be believed, South America is the safest place to be should Kim press the red button.

Mr Lilley said: “At the moment, no countries located in South America are within range.”

(Image: PEN NEWS)

The range of North Korea’s missiles is subject to debate – though experts agree it’s increasing with Kim’s repeated tests.

Nukey McNukeface is available through Google Play Store and is currently going through iTunes review for IoS users.

Mr Lilley has also designed an app called Latercam that allows users to set alarms on photos, enabling them to be used as notes or reminders.