FaceApp continues to excite social media.
The app uses artificial intelligence to show users how they will look when they're old(er).
But how accurate is it?
We put it to the test with some familiar faces from here and overseas. We fed some shots from at least a few years ago into FaceApp and asked it to forecast how they'd look at the age they are now.
Then we compared the results with how they actually look. Does the forecast meet the reality? You be the judge.
Mick Jagger - 76
We'll start with the international stars. The Rolling Stones frontman will no doubt be rocking well into his 80s. FaceApp's forecast has him as a little less gaunt than reality. In fact, the FaceApp image might have more than a touch of the Keith Richards about it.
Paul McCartney – 77
Let It Be known that The Beatles legend definitely has some similarities to FaceApp's prediction, although it didn't take account of the grey hairs.
Ian McKellen - 80
The garrulous Gandalf star is as legendary as his Lord of the Rings character, and he's looking pretty good for his age in both images.
Maggie Smith – 84
Dame Maggie Smith has a legacy of on-screen roles, including Professor McGonagall in the Harry Potter franchise and Lady Violet Crawley in Downton Abbey. The app predicted how she looks now with a surprising level of accuracy.
Rachel Hunter - 49
Now for the New Zealanders. "Our Rach" said you couldn't beat a Trumpet - but can you beat FaceApp's prediction of how she'd look at 49?
Russell Crowe - 55
The academy award-winning Gladiator actor might have won the battle against FaceApp's AI. Is it us, or does the app's prediction looking a bit like former TV news supremo Bill Ralston?
Temuera Morrison - 58
The Shortland Street and Once Were Warriors actor has had an incredible career in front of the camera. He's looking less lined in his real life shot.
Sam Neill - 71
The Jurassic Park star is anything but a dinosaur compared to FaceApp's prediction. Just check out that beard and glasses!