Most advice about Google Play closed testing assumes a phone app. You post your opt-in link, people install it on their phone, and the 14 days start counting. If you built a watch face, a Wear OS app or an Android TV app, that advice leaves out the hardest part.

The rule for new personal developer accounts is the same: at least 12 testers opted in to your closed test for 14 days in a row before you can apply for production. What changes is who can actually test. Almost everyone who offers to test has a phone. Far fewer people have a Wear OS watch, and fewer still have an Android TV or Google TV device they are willing to install test builds on.

Why phone-only testers are a risk for watch and TV apps

A tester can join your test from any browser with a Google account, so a phone owner can opt in to a watch face test without any trouble. Your opted-in count goes up.…