I'm trying to use the latest Homekit Catalog app. (7/10/15 release) The app builds, starts and runs in Simulator (iPhone 6, iOS 9.0) but it cannot access Home data or find any accessories hosted by the Homekit Accessory Simulator. I've signed into iCloud in the Simulator's Settings.
I cannot test the app on my real iPhone 6 since it's running iOS 8.4, and this version of HK Catalog requires 9.0.
The previous Homekit Catalog (1/24/15), built with iOS 8.4 as the deployment target, works fine (finds and controls accessories) on my real iPhone 6 running iOS 8.4 but likewise the app cannot "see" any accessories from within the iOS 9.0 iPhone 6 Simulator. It will be "Browsing for new accessories" forever.
Running XCode 7b3 on Macbook running OS 10.10.4.