For Android users:

1. Open Google Play.
2. In the search bar, type “Armstrong Fluid Technology Wrench” for best results.
   (You can also try just “Wrench” – the Armstrong Wrench App is usually one of the first few options.)
3. Tap the Wrench App in the search results.
4. Tap Download, then follow the on-screen instructions to install the app.

For Apple users:

1. Open the App Store.
2. Search for “Armstrong Wrench”.
3. The Wrench App should appear near the top of the results. Tap Get to download.
4. Follow the on-screen instructions to install the app to your device.