* Instant Heart Rate app ($1.98) requires that you place your finger over the phone's camera sensor and flash. It tells your heart rate and keeps a record of it.
* Dot Measure will determine height and distance ($1.50 for Android, free for iPhone). It's handy for measuring a room, the size of your yard or whether your sofa will fit through the door.
USA Today's Edward C. Baig developed this list of apps and others. He is the author of iPhone for Dummies.
* Google Translate app for Android and iPhone is free and part of the Bing Translator app. Includes French, German, Italian, Portuguese, Russian and Spanish. It's handy for reading signs.
* CamScanner allows you to take a picture of any document, receipt or photo and instantly convert it to high-quality PDF or JPG format. It's free for all three major phone systems.
