Độc Đắc - Mua hộ XSMB is a free iPhone app developed by NORTHERN LOTTERY MTV COMPANY LIMITED that connects lottery buyers with agents. The app's main features include the ability to quickly purchase XSMB lottery tickets (including 235 numbers and 234 number pairs), check the results of the lottery draws in the north, and automatically receive prizes. The app also automatically sends the results of the lottery draws in the northern region of Vietnam, including xskt, xshn, xstd, and 6x36, every day at 6:30 PM.

It is worth noting that this app does not provide results for the lottery draws in the southern and central regions of Vietnam, nor does it include Vietnam's national lottery, Vietlott. The developers have said that they are working to improve the app to include these features in the future. Overall, Độc Đắc - Mua hộ XSMB is a useful app for those who regularly participate in the XSMB lottery in the northern region of Vietnam.