ToneBird vs Project Astra: Which is Better in 2026?

as of Sep 29, 2026

• In-app drafting
• Relationship memory
• Per-person tone adjustment
• Review before send
• Follow-up tracking
• +1 more

• Natural interaction
• Proactive responses
• Context aware dialogue
• Action intelligence
• Agent highlighting
• +7 more

ToneBird is a desktop AI reply assistant for Mac and Windows that drafts replies directly inside the apps a person already types in — Gmail, Slack, WhatsApp, and others — instead of requiring a separate chat window. It remembers the relationship and conversation history with each contact, pulling relevant facts (like an agreed price from a connected file) into the drafted reply, and adjusts tone per person rather than producing one generic style. Users open it with a keyboard shortcut (Option twice on Mac, Ctrl twice on Windows), compare a few draft replies, tweak the chosen one, and insert it before sending — ToneBird never sends a message on its own. It also surfaces a running list of promised follow-ups and unanswered questions pulled from past replies, and can draft calendar events from a conversation once a time is agreed. Pricing is free for light use (15 replies/day, 30 contacts), with Standard and Pro tiers raising daily usage and contact limits, plus a custom Enterprise tier.

Project Astra is a research prototype from Google DeepMind exploring the capabilities needed for a universal AI assistant that can understand and respond to the world in real time. Built on Gemini models, it processes text, voice, images, and live video to answer questions and complete tasks, drawing on Google apps like Search, Maps, and Lens. It is currently available only to selected testers on Android phones and prototype glasses, and its features are being folded into products such as Gemini Live.