Instant Heart Rate – Free

The best Health & Fitness app on Mobile Premier Awards 2011 according to jury of industry experts
See your every heart beat on the monitor like in ER rooms.
Measure your heart rate instantly.
Instant heart rate uses your iPhones camera to detect pulse on your fingertip. A technique used by medical pulse oximeters now available on your iPhone.
Place the tip of your index finger on iPhone’s camera and in a couple of seconds your Heart Rate will be shown. Instant Heart Rate will beep with your pulse.
A real-time chart will show your every heart beat.
Join 5 millions users who are already using it.
Features:
Heart rate measurement
Real-time PPG (EKG-like graph)
Sharing to Twitter, Facebook and other social networks
+ much more in the full version
NOTE: Works best on iPhone 4 because it has a camera flash. On iPhone 3GS it has to be used with good lighting.
iPod touch is not supported, although it works for some users
NOTE: Make sure that your fingertip completely covers the camera lens. Press gently, since pressing too hard reduces blood flow in your finger and it’s harder to get a result. Make sure that your fingers are not cold. 
 
http://itunes.apple.com/nl/app/instant-heart-rate-free/id409625068

Accident-Alert

You are on a trip or a sport alone in a remote area? Your child must travel alone? You have health problems or dependence requiring rapid intervention in case of accident? If so, then Accident Alert is for you. Accident Alert ensures that if you fall, an alarm is triggered, an email or SMS with your current position is sent to your chosen recipients. With Accident Alert, you will feel safe always and everywhere. If you fall, your chosen contacts will be the first to be notified by e-mail and SMS. Accident Alert provides your contact with your current position, making it easy for him to find and help you. With advanced technology for detecting falls, Accident Alert can also apply to elderly persons or disabled.
Some of the features Accident Alert offers:
– Advanced Detection fall
– Use of GPS for localization of the fall
– Sends email and SMS or email
– Choose between different alarm sounds
– Possibility to configure the message which is sent
Accident Alert is unique. Not convinced? Try it and you will be delighted by its simplicity. With one click, you’ll be safe.
 
http://itunes.apple.com/nl/app/accident-alert/id434807870

iDown‎

iDown™ is the perfect App that frees you to feel secure when you are alone:
•             walking alone from the office to your car
•             while traveling alone or hiking in a remote area
•             for students and children, giving parents peace of mind
•             for the elderly or those recuperating and at risk of falling
•             for those working alone at risk of personal injury
Open and start iDown only when you need it!
iDown works by monitoring information from the accelerometer embedded in your iPhone.
If you fall, iDown employs the Smart Fall™ detection formula triggering an instant e-mail or text message to your designated recipients, providing your GPS location and street address. In addition, you have the option of instantly activating a touch switch that will provide the same alert information to your recipients, even if you have not fallen.