**iOS simulators**
* iPhone 17 Pro
* iPhone 16e
* iPad Pro 13"
**Android emulators**
* Pixel 9
* Pixel 9 Pro XL
* Pixel 9 Pro Fold
* Pixel Tablet
* Galaxy S23
### Apps and Builds
A mobile app in Docket is a long-lived container for every build you ship. Tests always run against the app's **active build**, which Docket installs onto the simulator before each run — so you never need to edit your tests after bumping a version.
* **Create an app**: choose a name and platform (`ios` or `android`) and upload your first build.
* **Add builds over time**: each build has its own name (typically a version or commit SHA) and binary.
* **Switch the active build**: promote any build to active to run your existing tests against it — useful for release candidates or reproducing regressions on older versions. Deleting the active build auto-promotes the next most recent one.