Ketchup (free) is a new iOS app that may help solve a unique problem: flaky friends. Are you always hearing, "let's hang out sometime"? Ketchup, a mobile- and web-based planner, ensures friends make good on that promise.

Friends send and accept invitations to do activities like coffee, lunch, dancing, drinks, or just hanging out. If you don't like what you see, you can respond with a variety of canned responses: a polite "It seems we can't make this happen" or a very straightforward "I'm focusing on my relationship." Once you've committed to an activity, there are only two options, complete or "flake."

Users need a Facebook account to use the app, but friends can be contacted via email or SMS if they're not on Ketchup. There's a web version of Ketchup as well, so you can make sure you're all caught up with invitations even without a mobile device.

Do you think Ketchup can cure your case of flaky friends? Download the app and let us know if you feel in "control of your social life." Watch how Ketchup works after the break.

Photos are arguably the most important part of your wedding — you can't pull out the wedding cake to relive the big day, right? Getting the best snaps comes down to having a top-notch photographer. But that's not all: you have to be comfortable with the person and their shooting style to be truly happy with the end result. One way to make that happen? Sitting down with them to chat about all your preferences and concerns. Here are a few questions to get you started so you walk down the aisle with your mind at ease that you're in good hands.

• What's your photography style? It's possible for one photographer to have a few different shooting styles, so be clear on which one she'll bring to your wedding. Will she be using film or digital, black and white or color, shooting with a photojournalistic feel or a more creative one? Maybe you want a mix — either way, all of these details need to be discussed before the wedding so there are no surprises.
• What's your typical wedding day schedule? Find out when the photographer plans to arrive (an hour before the ceremony starts? Two hours?) so you know which moments will be caught on camera and you can plan details like when to get ready with your bridesmaids. Also something to factor in: how long she plans to stay. You'll have a different set of pictures depending on whether she waits until most guests have left or leaves much earlier.
• What is the post process like? Every photographer has their own way of getting out the pictures: figure out her way before it's a month after the wedding, wondering where your photos are. You should ask questions like, "How long will it take to see the proofs? Will I get disk copies of the photos? Is there a limit to how many I get? Will it come packaged in an album?"

Keep reading for planning for a photographer emergency and day-of extras.

It's cherry blossom season in Washington DC! Instagram user dadouchic caught the famous trees in full glorious bloom and submitted the shot with the #coolcapture hashtag.

Have you been testing out your photography skills and snapped a shot you want to share? Submit your pics to our Cool Capture group or to Instagram with the #coolcapture hashtag, and your pic might be featured on the POPSUGAR Tech homepage. And don't forget to follow @popsugartech on Instagram!

Want to know what we really love about Trips With Tia, the brand-new web series exclusively on Circle of Moms by POPSUGAR? Not only do you get to see the All New 2014 Kia Sorento in action while hanging out with reality TV star Tia Mowry and her friends as they share parenting stories and tips, but also, it offers the chance to win fun, family-friendly prizes!

Watch this week's webisode, featuring Tia, Diane, and Lizzie chatting about all that goes into being a mom. Then check out the pictures above for behind-the-scenes photos of this funny and insightful segment. Pin your favorite image to one of your Pinterest boards for a chance to score $250 courtesy of the All New 2014 Kia Sorento — perfect for putting towards a spa day.

Official Rules

You can bet your wedding will have people Instagramming photos all night long. And thanks to some genius inventions, you can turn those shots into printed keepsakes. With a few of the services we've rounded up, all attendees have to do is tag their pictures with the hashtag of choice, and voilà — they're printed on the spot. And there you have it: snaps in a snap that your guests can take home as wedding souvenirs.

Insta Party Box

With a name like Insta Party Box, you know it's a guaranteed good time. Here's how it works: when your guests tag their Instagram photos with the hashtag, the small square white box finds those photos and instantly prints them out. It costs $200 per hour, which includes full custom graphics for the event, unlimited prints, and an on-site attendant. Another bonus is the option to have a book of all of the images printed after the event.

Instaprint

The idea behind Instaprint is similar to the one behind the Party Box, but here you get four sleek Instaprint boxes to put up around the event. Each box is associated with a certain location or hashtag, so tagged photos will automatically print. The company calls it a photo booth and Polaroid camera all rolled into one, and we can see why. Prices start at $5,000 for half a day.

Instaboothless

Consider Instaboothless (an on-site feature from Photoboothless) a photo booth system powered by Instagram. Like the other services, it prints out Instagram photos taken by guests after they tag them with a specific hashtag. Prices start at $650, and the prints also come with room for personalized messages and graphics.

BYO Booth

Besides having a clever name, BYO Booth promises printed memories for those who don't want to pay more for the printer. It collects photos from a hashtag on both Instagram and Twitter; guests without either account can email in their snaps. The photos then stream into a slide show that can be displayed for all to see on a monitor, but the only way to print them is if you set up your own printer. It also features a customized logo and print template and gathers all the pictures into a shared folder for all to see. The basic version of the service costs $200, and the most advanced one comes in at $400.

When Doctor Who, starring the dashing Matt Smith and "saucy" new companion Jenna-Louise Coleman, returned to the small screen last Saturday, there was one common outcry: how do I watch and trust the doctor without BBC? Fear not, TV-less Whovians. You can catch up with seasons past and present without Britain's premier public broadcasting channel.

Doctor Who runs Saturdays on BBC America at 8 p.m., but for those without cable subscriptions, new episodes are typically updated online Sunday morning or later. Read on to find out how to catch up with Eleven's latest adventures on the web.

T-Rex, with your tiny arms in proportion to your body, step aside; you're not the star of Jurassic Park. That title goes to Lex Murphy, the granddaughter of park creator John Hammond. She may have started the film as a scaredy cat, but Lex triumphs in the end to save the day with her early '90s computing skills.

Not only does she fight off a T-Rex from eating herself and her brother in the Jeep (even though she kind of brought his attention to them in the first place with the flashlight), she also outwits a pair of annoying raptors in the theme park's kitchen, like any responsible big sister would. Naturally, our favorite scenes with Lex also include some of the film's best lines, with her enthusiasm for 1993 technology, made all that much better — and cheesier — with a 2013 ear.

You may have had Encyclopedia Britannica on your family's first home computer, but Lex recognized the awesomeness that is the Jurassic Park jeep's interactive CD-ROM. But nothing is as BA as her using her hacking skills ("It's a Unix system!") to reprogram the park's security system before hungry dinosaurs can barrel through an unlocked door and make all the group's running through the night and rain for naught.

So, Lex, thanks for being a Geek We Love and showing the world that being a hacker nerd is how you get things done when a theme park of rageful, starving dinosaurs goes into emergency lockdown.