Tandem Diabetes Care announced Wednesday that the Food and Drug Administration had approved a smartphone app for programming insulin delivery for its t: slim X2 insulin pump. According to the business, it’s the first phone app for both iOS and Android that can deliver insulin. Previously, delivery was handled entirely by the pump.

Pump users will be able to program or cancel bolus doses of insulin, which are administered during mealtimes and are critical for maintaining blood glucose control. In a statement, John Sheridan, president and CEO of Tandem Diabetes Care, stated, “Giving a meal bolus is now the most common reason a person interacts with their pump, and the option to do so via a smartphone app offers a convenient and discrete alternative.”

For those who prefer not to wear pumps in public or connect them to undergarments like bras, the modification could be a significant improvement.

Tandem Diabetic Care, based in California, is a leading diabetes device manufacturer. The company’s t: connect mobile app already shows users’ blood sugar patterns, insulin delivery history, and any alerts or alarms. In the United States, it’s available for iOS and Android.

Tandem stated in a statement that the new bolus delivery upgrade will be available to a select group of customers this spring, with a wider rollout expected this summer.