For many people, gone are the days of logging blood glucose results on paper. Over the past several years, more and more blood glucose meters have become computer compatible, meaning that test results can be uploaded and studied digitally. Today, if you have an iPhone, iPad, iPod Touch, or an Android phone, you can download applications from your phone (and from iTunes for apps on Apple products) that let you record, store, and analyze information electronically, all in the palm of your hand. (No meter or pump transfers data to an app yet, though.)

Many apps cost a few bucks, but here are some free ones you can try for starters:

Glucose Buddy
This app lets you record blood glucose levels and note the time of day—such as “before breakfast” or “during activity.” You can view trend graphs, interact in the Glucose Buddy forums, and record insulin injections, exercise, and food eaten. You can also sync your phone to an online account to manage your data on Glucose Buddy’s website.
Devices: iPhone, iPod Touch, iPad

WaveSense
Meter manufacturer AgaMatrix’s app lets you log blood glucose levels and type in personal notes. You can record the amount of insulin injected and the number of carbohydrates eaten, and view one-, three-, seven-, 14-, 30-, and 90-day trends in graph or chart form. High, in-range, and low readings are color coded in the logbook. And you can e-mail your stats to family or your doctor. The app comes loaded with about 50 diabetes-related videos. 
Devices: iPhone, iPod Touch, iPad

Vree
The newly launched Vree (free for a limited time, but $1.99 after that) from Merck lets you log your blood glucose, exercise, weight, blood pressure, and food and medication intake. A home status page allows you to scroll through graphs and e-mail them to your doctor. The app has a database of common foods (including restaurant meals) but only allows users to build sandwiches and salads to personal specifications. Tips and articles on weight loss, nutrition, exercise, and type 2 diabetes are stored within the app. But note: The medication field doesn’t make tracking insulin doses possible.
Devices: iPhone, iPod Touch, iPad

OnTrack
You can log and graph your blood glucose level as well as food intake, blood pressure, weight, exercise, pulse, A1C results, body fat percentage, and medications you’ve taken. For each entry, you can add personal notes. Results can be exported via e-mail to your medical team.
Devices: Android phones

Lose It
Track your weight loss, daily food intake, and exercise with this comprehensive app. You can add meals as you eat them (from a list of common foods, brand-name foods, and restaurant meals, or your own recipes) and watch the sliding scale climb toward your daily calorie limit. You can record exercise (choose from a long list of activities), graph your weight loss, get reminders, and share your progress on Facebook and Twitter.
Devices: iPhone, iPod Touch, iPad

Calorie Counter by MyNetDiary
With this app, you can record meals (choose from an expansive food library that includes restaurant picks), exercise, water intake, medications, and your weight and measurements. Food selections include a nutrition facts label, and the app’s bar code scan lets you search for and log packaged foods. The app includes tips and articles on nutrition.
Devices: iPhone, iPod Touch, iPad