I can’t necessarily recommend which tool is the best for tracking your personal habits and goals, as all of them have their quirks. What I can do however (yes, it’s a bit of a cop-out) is tell you that the tool to use is whatever works best for you. I personally keep track of my daily habits and personal goals with a combo Evernote for input and then a Google spreadsheet for long-term tracking.
Tinder has been nothing less than a cultural phenomenon, adding "swiping" to our dating lexicon. The casual dating app is incredibly straightforward and easy to use. In fact, it's so simple that, at least for the standard free version, there are really only a few things you can do on it, including updating your profile, swiping left (to pass) or right (to like), and chatting with matches.
Why it's awesome: Founded in 2000 by Dr. Neil Clark Warren, eharmony is the site for serious daters. A spokesperson for the site says it's been used by 54 million people, and is apparently responsible for 4 percent of U.S. marriages. Users answer a lengthy questionnaire that helps eharmony determine what it calls a "a select group of compatible matches with whom you can build a quality relationship." Spira says she's always seen eharmony as a "matrimonial dating site.""That doesn’t mean you’re going to walk down the aisle, but it certainly means that you’re looking for a very serious relationship that may or may not lead to marriage. It may lead to living together or at least being in an exclusive, committed relationship."

The experts say: One of the best online dating sites for those looking for long-term relationships with professional people, users complete a personality test to measure compatibility with potential dates using psychometric analysis. Functionality is limited as the site is more geared up to helping you find a long term partner rather than flirting randomly with people you like the look of. Members have similar incomes and education. There is also a specific gay version of the site for those looking for a serious committed relationship with a same sex partner.
Very good dating sites find it important to inform members of their expensive matching algorithms which are used to create profile matches for members who are compatible. This is a fact that is one of the best features of dating online. If you are searching for a serious relationship, you need to be honest when you complete your questionnaire, to ensure that you receive only the best matches that are possible for you.
The place you are living in will determine the best site for you to use. Tinder and many other sites like that provide you the best online dating options. If you are under 40, then perhaps most of online sites will offer you a great number of possible and eligible singles. However, if you are over 50, then you have to choose a site that has numerous single people who are over 50 as well.
The experts say: This site is owned by the dating giant MEETIC and gives you access to 20 million members across Europe and it also merged with Match.com in 2009. A daily email suggests six members you might be interested in, which is a useful feature that doesn’t feel like you’re being bombarded but provides you enough choice to find a compatible date.
Free to join. Plenty of Fish is one of the biggest online dating sites in the world with over 40 millions users. It works by asking users to take a special POF Relationship Chemistry Predictor test, which measures self-confidence, family-orientation, self-control, social dependency and “easygoingness.” You’re then matched to those most compatible to you.
You can even say we're living through a worldwide Introvert Revolution. Just look at the success of self-proclaimed introvert Susan Cain's wildly popular book Quiet: The Power of Introverts in a World That Can’t Stop Talking. Her book has sold millions of copies worldwide, a TEDtalk she gave on the topic has been viewed over 19,294,447 times and counting, and she reportedly gets paid five-figures for a single appearance. 
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