The Halloween adventures of Charlie Brown and his cohorts are a timeless classic, but the new It's The Great Pumpkin, Charlie Brown ($4.99, Universal) app puts a neat spin on the animated tale with interactive pop-up book elements. It's fun to fiddle with, plus optional voice narrative and music, minor game elements, and extra activities help sweeten the pot.

Planning a haunted house or just feel like freaking out your friends? Halloween Spooky Sound Box ($0.99, Universal) is locked and loaded with everything you need to strike terror into your unsuspecting victims. With more than 96 eerie sound effects ranging from howls and screams to organ sounds and unearthly phrases, there's a ton of options to work with.

Ghost-hunting enthusiasts will get a kick out of Paranormal Recorder ($2.99, Universal), a freaky app that measures the level of EMF (electromagnetic field) in your surroundings, and triggers an audio recorder through your the microphone whenever there's a major spike signaling potential ghost activity. Some users have reported picking up spectral voices and spooky utterings.

If campy gore and old-school B-movies are your thing, then you'll find House of Horrors for iPad ($1.99, iPad) to be a treasure trove of cheesy goodness. This archive of over 100 public domain pre-1980s horror films is brimming with lo-fi excellence, with fine selections like Blood-O-Rama, I Eat Your Skin, Born from Hell, and Bloody Pit of Horror leading the pack.

You'd be surprised at just how many pet owners dress up their dogs and other furry friends in festive costumes each Halloween. If you don't have the patience to wrestle Fido into ghoulish attire, Frankenweenie (Free, Universal) is a great alternative. Simply snap a photo of your pet pal, and this silly app lets you transform them into adorably gruesome critters.

While pumpkin carving has always been on the top of my Halloween to-do list, I've never been into sticking my hands in and ripping out their guts. Too messy! Thankfully, Pumpkin 3D Magic ($1.99, Universal) lets me carve up virtual Jack-o-Lanterns without the grossness. Since I can't stick them on my porch, sharing my creations online is a nice option.

Can't find the right Halloween card to send to that special spooky someone in your life? Don't worry, Halloween Card Creator (Free, Universal) has your back. With lots of backgrounds to pick from, tons of spooky creatures to plunk down, and an in-depth set of editing features, you can whip up something fun to send to your freaky friends in no time.

It may not have the most robust set of features, but at only a buck, My Monster Voice ($0.99, Universal) does have one pretty cool thing going for it: It can make you sound like Satan himself. Tweaking your voice to alter its pitch, this bite-sized app does a great job of giving your voice a much-needed demonic timbre -- perfect for a creepy costume accompaniment.