Receiptmate: No one save receipts anymore. We buy nearly everything either online or with a credit card, so since we basically have an electronic record of most of our purchases, it's become too easy to toss any potential paper trail. But some of our payments are still made in cash, and if you really want to track your budget, you need to track it all. Receiptmate makes it easy. [$3]

Grid: Created by Josh Leong, Grid allows you to put any type of multimedia into tiles of a grid that are whatever size you want. You can make grids that mix photos, text, Google Maps data, symbols, whatever. And they're sharable so you can collaborate with other users. If you've ever used a GoogleDoc to organize a group of people, this is the beautiful version of that. Grid is only for iOS right now, but at least it's free. All you visual thinkers get crackin'. [Free]

Snap Save: Snap Save is a new iOS app that lets you save all of your Snapchats for future fun. Being able to save Snapcats isn't new in and of itself—there are other ways to do that—but unlike other methods, this app prevents the sender from knowing you've saved it. (If you take a screenshot of the image, for example, Snapchat notifies the sender.) Just open Snap Save to view your Snapchats, and the app saves a version. That's it. You can pay $2.99 for an ad-free version that lets you save the Snapchats to your Camera Roll. [Free]

KeyMe: KeyMe takes a scan of your house key and generates coded instructions that any locksmith or key maker will be able to read, so you can make a copy of your key anywhere in the world, no matter what situation you find yourself in. The code contains one line that instructs with blank to start with and another line with a series of numbers that dictate the depth of the key's teeth. Of course, with something like this there will be safety concerns, but keys aren't really the safest of security devices in and of themselves. Now, this certainly doesn't help the situation, but depending on how often you misplace your keys, the convenience could seriously outweigh the risk, as long as your careful about what you leave lying around. [Free, $10 per retrieval]

MixBit: The new app lets you record and upload up to 16 seconds of video, which you can edit in-app. But then comes the cool bit: you can string together up to 256 clips—both yours and video belonging to others—into an hour-long video. Cleverly, the video isn't all lumped together, but streamed seamlessly as separate chunks from the be MixBit servers. Your finished product can then be shared on Twitter, Facebook, or wherever. But while the content sits on the MixBit servers it's anonymous: each submission is unnamed, and there's no commenting system either. Which might be a good thing, depending on what you're filming. [Free]