Wham! Bam!
"They've done so, the company says, three times faster than those who use other methods"
IOW, it's taking only 1 minute, instead of 3?
Big Data, cloud, wearable computing and crowdsourcing boosters now have very, very tangible evidence of the technologies' power: 50,000 new humans. So claims an outfit called Ovuline, which offers an iOS and Android app dubbed Ovia Fertility that asks users to input details about their health and menstrual cycle, and can even …
There are many of these calendar based apps, and sure enough, they can slightly increase your chances of getting pregnant. There are very few that can actually decrease your chances; info on one that's over 99% effective can be had at http://www.cclgb.org.uk/ or the app at
http://www.ccli.org/productsservices/nfp-materials/cycleprogo-charting-software.php .
"You won't laugh when the British are extinct, and they declare Sharia law in the UK."
Why do "the British" need to survive? What about their genetics is (more) worth of propagation than that of another group?
As for culture, no empire lasts forever. Even were the whole world to be united under Sharia law some day, eventually that too would pass and humanity would evolve, adapt and move on. Your xenophobia is so small, so petty...it's nonsensical when viewed from a time horizon of centuries, let alone millenia.