Microsoft hasn’t quite managed to close the app gap between its own app stores and the behemoths that are iOS and Android, but the company has made significant progress over the past several months. Neowin came across the sign you see in the image above at the Microsoft Build Developer Conference on Wednesday, proclaiming the latest milestone of the Windows app stores: 400,000 apps between PCs and mobile devices.

The Windows app store has accumulated over 150,000 apps according to MetroScanner, which means that the Windows Phone store has topped 250,000, almost doubling the amount of apps on the store around the same time last year. Additionally, Windows users are now downloading 14 million apps a day between their various devices. Expect plenty more news when Microsoft takes the stage at the Build Developer Conference.