As a developer, you can absolutely grab the code and run the app on your own own devices. However, there are a few manual steps that you need to take before this works.<p>If you want to build the v1.0 app with Xcode 6, then use these instructions: <a href="https:&#x2F;&#x2F;github.com&#x2F;mozilla&#x2F;firefox-ios&#x2F;blob&#x2F;v1.0&#x2F;BUILDING.md" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;mozilla&#x2F;firefox-ios&#x2F;blob&#x2F;v1.0&#x2F;BUILDING.md</a><p>If you want to build the (upcoming) v1.1 app with Xcode 7 beta, then use these instructions: <a href="https:&#x2F;&#x2F;github.com&#x2F;mozilla&#x2F;firefox-ios&#x2F;blob&#x2F;master&#x2F;BUILDING.md" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;mozilla&#x2F;firefox-ios&#x2F;blob&#x2F;master&#x2F;BUILDING....</a><p>Happy to help here or in a new thread if you get stuck in the process. We have tried to make it as simple as possible but due to some code signing complexity it can&#x27;t be a &#x27;download &amp; run on device&#x27; kind of thing unfortunately.