It is 100s of questions long and asks many probing questions about religion and moral views.

It’s a softly, softly approach – excellent for those new to internet dating or nervous about entering the melee, or using a fast-food dating app like Tinder.

Cons: The lengthy survey you must complete before you sign up.

Pros: Uses compatibility testing to match you with someone who shares the same worldview as you.

Pitches itself as the site to go to for ‘serious, lasting relationships’ and marriage – which may well be refreshing to some in the current dating climate.

Here’s a guide to the sites to check out – feel free to leave your own recommendations in the comments below – and let us know if you met your life partner online or on an app and if so, which one. Has both desktop and mobile site and an app, plus paid-for and free singles events. It’s quite difficult to get any information on the price to use match.com’s full service.

Very well managed, new, clean design makes it more appealing to navigate. When you click for more info you’ll more often than not end up with info boxes that you need to fill in before you can advance to the pricing info.Pricier – it’s £44.95 for a month, but that drops to £12.95 per month if you sign up for a year.You can’t browse pictures or profiles – you wait to be matched by the mystery algorithm after answering the 400 questions – then you are guided through a contact process.But size isn’t everything – as anyone who has just wrapped up a three-hour swiping session on Tinder will attest.Too many members with no filter can result in either hours of swiping to find someone you fancy, or hundreds of messages in your inbox that you’ll never have time to read.Psychologists and dating experts guide you through each step of the process – including messaging, which is somewhat structured and scripted – and there’s an anonomisation function for calling.