Gambu is a messaging service designed for personal communication and teamwork, available on iOS, Android, tablets, and the web. Users can exchange messages and files in private chats and groups, with conversation history synchronized across devices. The platform also offers audio and video calls over a protected connection, plus 24-hour Stories for sharing photos, videos, and styled text. Its Reels feature provides a feed of short vertical videos, while Channels let creators publish posts, Reels, and Stories to an audience.

Gambu includes an AI assistant with tools for message translation, summaries, and suggested replies. Free accounts receive daily usage limits for these features. Security options include data encryption, a passcode, and privacy controls. Gambu is free to use, with an optional Premium subscription priced at 29 rubles per month. Premium adds voice-message transcription, higher daily AI limits, and a badge beside the subscriber’s name. The service supports account access across devices, and subscriptions can be managed through its website or Android app.