CallSign vs GameChat

CallSign is group chat with AI for gaming and spending time with friends over voice, video, or text. Its Free plan includes servers, channels, direct messages, and voice channels, plus what the service calls “Always-on safety.” File uploads are limited to 25 MB on Free, 50 MB on Pro Basic, and 500 MB on Pro. Screen sharing is listed at 720p on Free, 1080p on Pro Basic, and 4K/60fps on Pro. The Pro page lists an AI assistant, summaries, voice transcription, and semantic search across messages. Pro also includes animated avatars and custom profile themes; custom emoji and stickers are included with Pro Basic and Pro. CallSign is available on Android, iOS, web, Windows, macOS, and Linux. Free costs nothing. Pro Basic is $2.99 a month or 29.99 USD yearly; Pro is $19.99 a month or 199.99 USD yearly. PlayStation and Xbox are listed as coming soon. A Public Test Build is available for trying features before launch and reporting bugs.

GameChat is a Nintendo Switch 2 system feature for voice chat, screen sharing and video chat while friends play. A session supports up to 12 people in voice chat. Up to four participants can share game screens simultaneously, including while playing different games, and up to four can join video chat. The console’s built-in microphone filters unwanted sounds, including game audio, and adjusts volume to surrounding conditions. Video chat requires a compatible USB-C camera sold separately; backgrounds can be changed, including to the current game. Players use the C Button on the right Joy-Con 2 controller to start chats, answer invitations or mute themselves. Sessions are limited to approved friends. Setup requires text-message verification through the phone number on a Nintendo Account. Online use requires internet, a Nintendo Account and Nintendo Switch Online membership; availability varies by country. GameChat is available only on Nintendo Switch 2.