1. If you are in an app, press the home button to return to the home screen.
2. Double-click the Home button to load recently used apps.
3. In the list of recently used apps at the bottom of the screen, select the app by tapping and holding on the app until the red minus appears. Tap the red minus to quit the app.
4. Press the Home button to return to recently used apps. Then press the Home button again return to the Home screen.

This Apple article describes the process of closing an app in more detail.

Tap the “i” in the bottom right of any formula screen. You can choose SI or US units.

Yes! If there’s a particular equation you’d like to see, let me know. I’m keeping a list and will work on adding the most popular requests.

It will help me if you can provide a link describing the equation you want, even if it’s just an article on Wikipedia.

In order to comply with HIPAA, you should set a PIN on your iPhone and set the passcode to be required immediately.

To set a PIN, open the “Settings” app, tap “General”, and tap “Passcode Lock”.

It currently is not possible to print or export data from Patient Tracker. However, we’re looking into options for adding this in the future.

If you have iTunes set to automatically sync and backup your iPhone when it is connected, iTunes will backup data for 3rd party apps such as Patient Tracker. This backup can be used to restore your data if something happens to your iPhone or iPod touch.

I always love to hear ideas for new apps. If you have an idea for an iPhone app that would make your life easier, let me know.

Our medical apps are designed exclusively for Apple’s iOS devices, including the iPhone, iPod touch, and iPad.

The Medical Calculator, Normal Lab Values, Medical Abbreviations, Vaccines, Jaundice, Patient Tracker, and Lab Unit Converter apps were designed by an emergency medicine doctor at Denver Health, a level 1 trauma center. The RSI and Sedation apps were designed by a doctor and associate professor in emergency medicine.

The medical apps were programmed by Keaka Jackson. I graduated from Stanford University with a Bachelor’s degree and Master’s degree in computer science and a minor in mechanical engineering. I live with an emergency medicine doctor, my sister is an obstetrician and gynecologist, my brother-in-law is a pediatrician, and my friends are doctors in various specialties.

View the main page for a full list of medical apps for the iPhone and iPod touch.

• Path Tracker: Record your path as you move, save it to the web, and share it with friends!
• Quotes and iAds: Read amazing quotes and play with Apple’s new interactive iAds.
• Visage Login: Quickly and safely customize your Mac OS X login screen.
• PowerController, the iTunes alarm clock: Wake up to your favorite music. Wakes your computer from sleep, plays any playlist in iTunes, and gradually increases the song volume.

Daniel Cakici created the great icon you see on your iPhone.

Feel free to contact me.