Pricing
Start Free. Upgrade When You Need More.
Free
Preview across every breakpoint
- A full responsive testing suite
- Multi-device previews
- Custom workspaces
- Scroll sync
Pro
Sync and edit across every breakpoint
- Interaction sync
- Breakpoint inspector
- Live CSS editing
- Saved CSS edits
- Change tracking and CSS export
- MCP server for AI agents
- 30-day money-back guarantee
Add To Chrome to start your 7-day Pro trial, no payment details needed.
Compare plans and features
| Feature | Free | Pro |
|---|---|---|
| Multi-Device Previews | Included | Included |
| Device Presets And Custom Sizes | Included | Included |
| Scroll Sync | Included | Included |
| Site Breakpoints | Included | Included |
| Workspaces | Included | Included |
| Rotate, Resize, And Zoom | Included | Included |
| Screenshots And Overflow Warnings | Included | Included |
| Interaction Sync | Not Included | Included |
| Breakpoint Inspector | Not Included | Included |
| Live CSS And Class Editing | Not Included | Included |
| Saved CSS edits | Not Included | Included |
| Change Tracking And CSS Export | Not Included | Included |
| MCP Server | Not Included | Included |
FAQ
Can I use Responsive Tester for free?
Yes. The core preview features are free: synced viewports, scroll sync, device presets, rotate and resize, zoom, and screenshots. Pro adds interaction sync, the breakpoint inspector, live CSS editing, saved CSS edits, change tracking with CSS export, and the MCP server.
How does the free trial work?
Every install starts a 7-day Pro trial automatically, no card required. When the trial ends, the extension reverts to the free features. No auto-charge, no surprise. Upgrade any time to keep Pro.
Is this a one-time purchase or a subscription?
One-time. Pay once, use it forever. No subscription, no auto-renew.
Can I use my license on multiple computers?
Yes. Each license is good for 3 activations, so you can use Pro across your work and personal computers.
What if I lose my license key?
Sign in to gumroad.com with the email you bought with to retrieve your key, or email violetsmyster@gmail.com for help.
How secure is the payment?
All payments are processed by Gumroad. Your card and billing details are stored on Gumroad’s servers; Responsive Tester never sees them.
What if I change my mind?
A 30-day money-back guarantee is included. Email violetsmyster@gmail.com within 30 days for a full refund.
How can I contact support?
For any billing, licensing, or product question, email violetsmyster@gmail.com.