Though iPhones remain not supported on Republic, among today’s announcements from Apple is support for FaceTime on both Android (and Windows). There is no Android (or Windows) FaceTime app and an Apple device (iPhone, iPad or Mac) participating in the conversation remains a requirement. The new cross-platform FaceTime features are enabled by the latest Apple operating systems (iOS 15, iPadOS 15 and macOS 12 Monterey). iOS 15 and iPadOS 15 land Monday, September 20th. macOS 12 Monterey is due later this fall though a public beta is available now. Apple has an impressive track record of supporting its older hardware. iOS 15 and iPadOS 15 run on devices released as far back as 2015. macOS 12 Monterey runs on some older Macs released as far back as 2013.
The gist is anyone with an Apple device running iOS 15, iPadOS 15 or macOS 12 Monterey will be able to invite Android (and Windows) users to a FaceTime conversation by sharing a weblink. Android (and Windows) invitees join the conversation by accessing the link. My understanding is only the latest versions of Google’s Chrome (Android) and Microsoft Edge (Windows) are supported.