Comparison
InstantPWA vs Klaviyo (push add-on)
Push as an add-on to email/SMS, or install as the core product?
Klaviyo is primarily an email and SMS platform for e-commerce, with web push available as part of a broader plan. InstantPWA is a dedicated tool for the install-and-push moment specifically, with no requirement to adopt Klaviyo's email/SMS pricing tiers to get an install prompt.
Home-screen install popup
InstantPWA
Yes
Klaviyo (push add-on)
No
Email & SMS marketing
InstantPWA
No
Klaviyo (push add-on)
Yes
Web push as a bundled add-on
InstantPWA
No
Klaviyo (push add-on)
Yes
Standalone install pricing
InstantPWA
Yes
Klaviyo (push add-on)
No
Free plan
InstantPWA
Generous
Klaviyo (push add-on)
Contact-list capped
When to pick which
Use Klaviyo if email and SMS are your primary channels and push is a nice-to-have add-on to that stack. Use InstantPWA when you specifically want to grow home-screen installs, independent of your email/SMS provider.