Other Words does not utilize user accounts. The app simply stores your game settings on your local device.
When you play a game, your profile image is transmitted across your local Wi‑Fi network to the other players and stored on their device for the duration of the game. Your profile image is never uploaded to any servers.
At the end of a game, a few gameplay stats are uploaded to the Other Word's database on iCloud. There is no personally identifiable information in any of this data.
Other Words does not use any third-party SDKs.