iPhones have been known to save a social life or two, but apparently you can use the new technology to save real lives, too. Inspired by Mashable’s list of “7 iPhone Apps That Can Save Lives,” here are the best free and paid applications that will help you both in the line of duty and with off-duty pranks.

If you know of a really great app that’s helped you on the job and isn’t mentioned, please post it in the comments section.

Pocket First Aid & CPR – $3.99
Created by the American Heart Association, the Pocket First Aid & CPR features hundreds of pages with illustrations and covers CPR, choking, bites, bruises, burns, seizures, diabetic emergencies and more. Moreover, there are videos and a place where you can save your own and others medical emergency information.

myLite Flashlight – Free
Dubbed the “Swiss Army Knife of flashlights,” myLite provides illumination when you need it the most. Obviously it won’t be as bright as your standard flashlight, but what it will do is allow you to adjust color and brightness. As mentioned by its creator DoApp Inc., other uses for myLite include sending out SOS messages and showing off on the dance floor.

Police Codes – $.99
We realize officers have most of these codes forever embossed in their brains. However, this app provides an excellent refresher guide for medical/fire codes, police 10 codes, police 11 codes and scanner color codes.

U.S. Marshals Service – $.99
Be completely in synch with U.S. Marshals: Known about recent arrests, most wanted reports, upcoming asset forfeiture sales and more. Although this app doesn’t have a direct tie to the U.S. Marshal Service or any other government entity, its reports come directly from the service news feed.

Police Scanner – $2.99
This worthy companion for Police Codes grants you access to law enforcement, fire and EMS dispatch frequencies. While on-call volunteer firefighters and emergency responders can listen in, they won’t be able to broadcast or respond. Frequencies include both national and international streams.

CPR & Choking – Free
If someone is actually choking, it might not be the time to pull out your iPhone. Despite that fact, it serves as a proper review for those who already have had CPR training. Developed by doctors and educators at the University of Washington, this life-saving app includes short video demonstrations on how to perform CPR properly.

EMS Logger Plus – $2.99
Building on the success of the free EMS Logger, EMS Logger Plus allows paramedics to document critical events without a pen and paper. This new version even includes a shaker-activated timer, which helps you time pulse and respiration. The app’s creator, an EMT student at the time, has also created similar applications for police and fire personnel that can be found here.

Field Agent Fingerprint App – $1.99
Here’s an app for law enforcement members who fancy themselves as jokesters. It allows you to take fingerprints and “search” a database of the FBI’s most wanted. However, the fingerprint scan and the search are both completely fake. It’s just a good way to scare your friends into thinking they are, in fact, wanted.

EMS Meds – $2.99
Written by the same EMT student who made EMS Logger Plus, EMS Meds is a perfect reference guide for paramedics that catalogs about 80 commonly used drugs by EMS personnel. In addition to the dosage guide, there are four calculators for dosage, body surface area, simple infusion and drip rates.

FBI Most Wanted – $1.99
With this application you could, perhaps, crack a big-time case. See someone who just looks suspicious? Match up their mug on the updated lists of the top ten fugitives, most-wanted terrorists, breaking news and more. Want to alert the proper authorities? There’s also direct access to contact information for local FBI and U.S. Embassies.

SirenFX – Police/Emergency Sound Effects – $.99
A catalogue of emergency sound effects can be a big help if you find yourself in an emergency situation without a siren. On the other hand, it appears it’s best use is to freak out your friends. In addition to a siren, sound effects include a police radio, air horn and wail.