Compare SaaS Tools Without Leaving Your Browser
Browsing a competitor's site? One click to generate a full battle card — pricing, features, positioning, strategic gaps. Free Chrome extension, no signup.
Spyglass
NEW
Install the Extension
Load the extension in Chrome in 30 seconds. No Chrome Web Store account needed for manual install.
Browse Any SaaS Site
Go to any competitor's website — Stripe, Notion, Salesforce, whatever. The extension auto-detects the URL.
Pick the Opponent & Battle
Type your own tool (or pick from 12 popular matchups) and hit Battle. Instant comparison in a new tab.
FAQ
Is the extension free?
Yes. The Spyglass Chrome extension is completely free. No signup, no limits. Generate as many battle cards as you want.
What data does the extension collect?
The extension only stores your recent comparisons locally (to show your history). It does not track your browsing. We don't collect personal data. We track anonymous usage counts through our GA4 analytics — just like our website.
Why manual install instead of Chrome Web Store?
We're in the process of listing on the Chrome Web Store (pending review). Once approved, one-click install will be available. Manual install is the same extension — just loaded from your local machine.
Does it work on other browsers?
Yes — Brave, Edge, Arc, and any Chromium-based browser supports installing unpacked extensions the same way. Firefox support coming soon.
Can I compare any two SaaS tools?
Yes. Enter any two domain names or URLs. The extension opens our battle card generator with your selected tools. We have data on 125+ tools and growing.