We are in an age where technology seeps into every aspect of our lives.

We communicate with friends and family through Whatsapp and Facebook, sort out our finances on personal banking apps, largely carry out our jobs via email and other online arenas, and singles use dating apps as a platform for prospective partners.

So it is no surprise that matters in our relationships can now be sorted online too.In our increasingly busy lives, it can be difficult to co-ordinate diaries, sort out the food shop or fairly split the bills.

Meet the couples who are using apps in their relationships.

Love and sex news: in pictures Show all 31 1 /31 Love and sex news: in pictures Love and sex news: in pictures What makes a perfect penis? Scientists have now answered one of these great unknowns. According to a new study, “general cosmetic appearance” is the most important penile aspect when it comes to what women value down there. This is swiftly followed by the appearance of pubic hair, penile skin, and girth. Length comes in at number six, with the look of the scrotum trailing closely behind. The least important facet of the phallus, say the scientists, is the “position and shape of meatus”, the vertical slit at the opening of the urethra. Getty Love and sex news: in pictures Half of divorcees had doubts on their wedding day Over half of divorcees considered abandoning their husband or wife-to-be at the altar on their wedding day, a new study has revealed. 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Ella Dawson, now 22, said she had never had unprotected sex and thought she “wasn't the sort of person STDs happened to” when the symptoms first appeared during her time at university in the US. She wrote that the diagnosis initially felt like a “punishment” for her values and relationships and worried her that telling boyfriends would ruin her love life. Ella Dawson Love and sex news: in pictures More sleep, better sex A new study could have a simple answer to enhancing your sex life – just get a good night’s sleep (if you are a woman at least). A study conducted by a team at the University of Michigan Sleep and Circadian Research Laboratory found women who get an extra hour of sleep at night reported higher levels of sexual desire and were more likely to have sex with their partners. Getty Images Love and sex news: in pictures Swipe right A woman has detailed her experiences of a week of always swiping right on Tinder. 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Susannah Ireland Love and sex news: in pictures Pornhub searches by age of user Pornhubs prolific Insights blog fires out many reports of sociological interest, none more so than its latest on age, which lays bare different age groups' sexual proclivities. Looking at the most popular searches among 18-24s, there are several familial terms including 'step mom', 'milf', 'mom' and 'step sister', a trend that seems to die out somewhat in users' 30s. By 65, 'massage' becomes the top term, while 'granny' perhaps unsurprisingly also hits the top ten. PlaceIt/Just Another IKEA Catalog Love and sex news: in pictures Mature sex Research into the sexual lives of more than 7,000 men and women between the ages of 50 and 90 in England reveals that half of men and almost a third of women aged 70 and over were still sexually active, with around a third of these sexually active older people having sexual intercourse twice a month or more. 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But if you love each other, you get over the difficulties.” Love and sex news: in pictures Valentine's Day porn Pornhub saw a (slight) drop in traffic on Valentine's Day as people focused on pleasuring their partners rather than themselves. Everywhere, it is, except for London. Overall UK traffic dipped 3 per cent across the UK, with Plymouth and Oxford seeing the biggest drops of 11 per cent and 10 per cent respectively. In fact every major city spent less time watching porn bar London, the Pornhub audience for which grew by 2 per cent. Getty Love and sex news: in pictures 1 in 10 men paying for sex A tenth of British men have admitted to paying for sex, according to a new study. Professionals aged 25 to 34 who binge drink and take drugs were found to be the most likely to have used the services of prostitutes, based on findings from a study of 6,108 men. Around 11 per cent of subjects, in the study published in the Sexually Transmitted Infections journal, have ever paid for sex in their lifetime and four per cent admitted to doing so in the last five years. Getty Images Love and sex news: in pictures Questions that determine if you're in love The existence of love and its nature is something that has troubled philosophers for centuries, but a pair of scientists believe they have a set of questions that yield "clear empirical evidence" of it, or at least whether your relationship will end in divorce. They are: 'How happy are you in your marriage relative to how happy you would be if you weren't in the marriage?' and 'How do you think your spouse answered that question?' Columbia

Co-ordinating diaries

Matt, 24 and Kelly, 23, use the calendar app TimeTree to coordinate their schedule. Both in demanding, full-time jobs in London the app means they both know what each other are up to and have a quick reminder of their upcoming joint plans at the click of a button, without having to clog up each other’s work calendar.

“When work takes up most of your time, it is so easy to become double booked and not remember agreeing to things, especially things planned weeks or months in advance,” Matt says. “So, the app helps to plan, plus also improves communication as it is rare I’ll be doing something that Kelly might not know about or has forgotten about as it is in the app.”

Long-distance struggles

Kate and George, both 24, have been together for four years and both lived in the UK for three of those years. Last year, Kate moved back to her home city of Kuala Lumpur, Malaysia while George stayed in the UK.

Having to adjust to new ways to communicate with each other – as well as being on different time zones – they downloaded Between which now serves as their main communication along with Skype.

The feature which makes it a great one for long-distance couples is the time zone one: “We can always tell what time it is in each other’s country without having to count,” Kate says. “Plus the calendar feature lets us plan special dates like birthday s and anniversaries.”

The app is essentially a conversation app but dedicated to couples, each person can chat, share photos, schedules and stickers – which are apparently the best part.

“They are little animated illustrations, much like the ones on Facebook Messenger and WeChat but they are very couple-centric,” Kate explains. “It is kind of sickly sweet but they are a godsend. When you talk to someone every day things can get a bit repetitive so the stickers help when you feel you want to convey a feeling rather than word like sending a kiss or a hug.”

The shared food shop

Having recently moved in together after dating for two years, Mandy , 25, and Kate, 29, have found Wunderlist helpful as they navigate their new shared lives together.

The to-do list app allows you and another member of the app to create a shared list which the couple use for shopping.

“Since moving in together it was hard to know what groceries we needed to buy and what had already been bought,” Mandy says. “Wundurlist has actually enabled us to manage our money better as it makes sure we do not buy the same thing twice.”

Cost-splitting

Splitwise keeps tracks of who is paying the bills and who owes each other what which can be handy especially if the couple is not married or living together Declan , 30, who has used the app in his relationship says.

“In modern relationships, finances can be confusing – and a source of resentment: £100 here for the monthly Sky subscription, £50 there for a Sunday evening meal out – it all adds up. If you’re married, it is all coming out of the same pot but when you’re living separately, especially in London, you want to make sure that one person isn’t paying for the bulk of activities – especially if you both have the same amount of ready cash.

“Keeping track of it all is really difficult, but Splitwise is the best solution I’ve found so far. Purchases, large and small, can be logged by the person paying, which offsets against anything owed to the other person.

“While it is probably more damaging to your relationships to add too much small stuff – for the bigger purchases it’s a great way to divide up responsibility,” he says.

Storing memories

After travelling Australia together earlier this year, Hannah, 24, and Ben, 26, found that the best app to share all the memories they captured was PhotoCircle. Now living in London together, they use the app to share photos with family too. You can make different albums on the app and then invite people to share it using a pin.