The downsides: Grindr is NSFW. Messages will be freaky AF, and you're 100% going to receive a ton of unsolicited (or solicited, if you asked) dick pics, so messaging on Grindr while you're on the train or in line at the store isn't quite as casual as other dating apps might be. You're also going to get badgered for pictures as well, so if you're uncomfortable with that, steer clear for a while.
Who it's good for: Tinder is place you go to find someone to flirt with ASAP. Everyone and their mother is on Tinder, and the wide variety of people means you'll never not be able to find someone close. Tinder is great for finding a quick hookup with someone nearby where you live, and it's especially handy if you're looking for a vacation fling or a local to show you around while you're traveling. It's pretty much online dating without the commitment: You can use it when you're bored, ignore it for three weeks, and come back to find new matches and a new crowd to swipe through.
The gist: Though it's not the most attractive setup, Plenty of Fish is a great newbie choice for people just dipping their toes into the world of online dating. As a tried and true option that's been around for over 15 years, the 30+ crowd is way more familiar with Plenty of Fish than they would be with newer apps or even OkCupid, which recently received a modern makeover. The advertising, lengthy questionnaires, and profiles are extremely traditional, making this a safe bet for non-millennials, divorcees, and single parents who are not in the mood to mess around. Oh yeah, and its 90 million registered users beats out almost every other dating site's stats — so you're guaranteed to never get bored.