Free responsive website checker for mobile, tablet and desktop
Mac menu bar app for viewing and managing local dev servers and ports
Stage
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Founded
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Based in
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Pricing model
Free
Free trial
Pricing
Not given
Free trial for 7 days. After trial: $8.99 USD one-time for 1 Mac (early-bird pricing, normally $19.99), $39.99 USD for 3 Macs, $59.99 USD for 5 Macs. One-time purchase with free updates, no subscription.
Key features
Test multiple device viewports simultaneously
Real CSS viewport rendering
Share setup links
Custom pixel width testing
No installation required
Sync scroll across panes
Browser-based with no account needed
Menu bar display of all listening ports and processes
Kill, restart, and manage dev servers from the menu bar
Live health checks with HTTP status indicators and response times
Live website previews and screenshots of dev servers
Live log streaming and tail capabilities
Project stacks to start multiple servers together
QR code sharing and public HTTPS sharing via cloudflared or ngrok
devports CLI for Terminal and Raycast access
CPU and memory monitoring per server
What makes it different
Compare multiple real device widths side by side instead of switching one at a time
Faster than DevTools for checking several device sizes at once
Entirely browser-based with no setup, signup or download
Built and maintained by one developer in the open
Native SwiftUI app optimized for Mac menu bar with no Electron overhead
Complete local privacy with no account, no analytics, and no data collection
One-time purchase with free updates instead of subscription model
Recognizes and integrates with major development frameworks and tools
Keyboard-first interface designed for developer efficiency
Responsive Tool
Portlivo