Antigravity Link vs onUI
A side-by-side comparison of Antigravity Link and onUI — pricing, license, deployment, and where each tool wins.
Antigravity Link
github.com
VS Code extension that bridges mobile devices to Google's Antigravity IDE (a Claude-powered VS Code fork). Mirror active AI chat sessions on your phone, send messages, upload files, stop AI generation, and automate workflows via a local HTTP API or 9 MCP tools. Listed in the official MCP Registry.
onUI
github.com
Open-source browser extension and MCP server for annotation-first UI pair programming with AI agents. Works with Claude Code, Cursor, Windsurf, Copilot. Chrome, Edge, Firefox. Free, GPL-3.0.
| Feature | Antigravity Link | onUI |
|---|---|---|
| Pricing | Freemium | Freemium |
| Model | Freemium | Freemium |
| License | Proprietary | Proprietary |
| Deployment | Cloud | Cloud |
| Category | Code & Development | Code & Development |
| Self-hosted | ✕No | ✕No |
| Free tier | ✓Yes | ✓Yes |
Pick Antigravity Link if…
- ✓You prefer Antigravity Link's feature set or ecosystem fit.
Pick onUI if…
- ✓You prefer onUI's feature set or ecosystem fit.
Switch from Antigravity Link → onUI
1–4hlow risk
Light lift — 1-4 engineering hours for a small team.
Export from Antigravity Link: Git history, JSON config
2 things to watch
- ⚠Re-grant SSH keys / OAuth
- ⚠Re-wire CI secrets
Switch from onUI → Antigravity Link
1–4hlow risk
Light lift — 1-4 engineering hours for a small team.
Export from onUI: Git history, JSON config
2 things to watch
- ⚠Re-grant SSH keys / OAuth
- ⚠Re-wire CI secrets