Pebble, the company behind the eponymous smart watch, has launched the Pebble SDK 2.0 aimed at making it easier for developers to build apps for the wearable device. It has also introduced full integration with iOS 7.

The SDK 2.0 adds APIs for Javascript, Acceleromoeter, Data Logging and Persistent Storage.

The company claims the Javascript API will allow iOS and Android developers to make apps that more directly interact with the internet, to enable real-time weather and transport information and location check-in.

The accelerometer is designed to provide greater scope for health and fitness apps along with gesture-based remote control. The data logging capability will also be useful for fitness apps, while the persistent storage API will provide the ability to store game information such as high scores and settings.

Support for iOS 7 will be enabled by a new Pebble app currently under review by Apple. It will allow notifications from calendars, Twitter, Facebook, Google+, Instagram, Flickr and WhatsApp to appear on the user’s Pebble device.

In a blog post, Pebble said there are now 190,000 of the devices in use, with two million apps and watch faces downloaded. More than 10,000 developers are currently developing apps for Pebble.

Research firm Canalys recently forecast that the worldwide smart watch market will exceed five million unit shipments in 2014.