Twitch is constantly working to change their platform for streamers. Sometimes that is with more controversial moves like the new Terms of Service, but more often the updates are geared at helping streamers and their audiences. Last year, Twitch unveiled a slew of content at TwitchCon, most of it aimed at helping creators out, but last year they also rolled out extensions, a new way of creating interactivity with fans. Now, Twitch is making those available on mobile.

While Twitch already dominates the interactive viewing process, extensions goal was to take this a step further, but one which was customizable to a certain game or streamer. The introduction video which premiered last year showed a number of possibilities for extensions. For a game like League of Legends, an extension could use the API of a site like OP.gg. This would allow viewers to see live stats of the game as it happens or even review the builds that certain players are using. Similar extensions could be applied to virtually any game, though. An extension could show a streamers items, stats, build path, or any other recorded metric within the game, but it could also allow for more interactive engagement from fans, like the ability to click on screen for certain polls or choices.

Announced on Thursday, the extensions mobile app seems like not only the logical end of extensions, but also what Twitch may have been aiming for from the start. Typing isn’t the easiest thing to do on a phone, and engaging with Twitch chat is far more comfortable from a keyboard than a touch screen. But the mobile app for extensions could allow simple interactivity – such as being able to select emotes or make effects happen across the screen – with just a few button pushes.

Twitch announced the extension mobile app with one other item as well, the extensions developer app. While the mobile app allows the average viewer a higher level of engagement, the developer app – or rig as they are calling it – is aimed at the people creating extensions. It allows developers to live test their extensions in a variety of environments, ensuring that it will work for its intended purpose and platform.

Twitch claims that the current extensions has been engaged with 1.5 billion times, but extensions are often absent from some of the most popular streams on Twitch. These new moves may be Twitch’s way of trying to up the ease of entry and make them more ubiquitous across major streams.