less.ms — Get it on Google Play

First launch

Installing is the normal Play Store flow. There are two things to do once the app opens.

Set lessms as your default SMS app. It asks on first launch. It needs this to receive and filter your messages — without it, the app can't do its job.
Grant the permissions it asks for. Contacts is used to put names on your threads. Notifications is how you hear about new messages.

Installed the APK from this page?

Install the Play Store version over it. If Play tells you the app can't be installed, uninstall the copy you have first, then install from Play.

Your messages are safe either way. Android stores your texts, not lessms, so your conversations will all still be there. Filter rules, macros, and themes live inside the app and are covered by Android's automatic backup — if you've customized a lot, it's worth a screenshot before you start.

Focus Edition comes with you. Your subscription is tied to your Google account, so signing in to Google Play on the new phone restores it automatically. There is nothing to transfer and no code to enter.

Questions

The FAQ covers filtering, macros, and themes. For anything else, ask on the discussion board.

Get less.ms for Android