1. Pair your Wear OS smartwatch with your Android smartphone via the Wear OS by Google Smartwatch (was Android Wear).
2. Download the latest version of Hole19 from the Google Play Store onto your Android Smartphone.
3. Hole19 should then appear automatically on your Watch within a few minutes, unless your watch is running WearOS 2.0 or above. In that case, you'll need to also download Hole19 from your watch's own Play Store.