Comparify
Shopify plug-in by ChimpCamp
Let customers compare your products side by side.
Customizable. Easy install. Analytics.
Try on Shopify 
Pricing
Baby Chimp
Free
All customization options
No analytics
Alpha Chimp
$4.99/month or $49.99/year
All customization options
Analytics
Chat support to request new features, special one-off customizations for your theme, etc.
