What is INP by App Referrer
INP by App Referrer shows how different referring applications impact Interaction to Next Paint (INP) — the time it takes for your site to respond to user input like taps, clicks, and keypresses.
This lens helps you identify which apps — such as messaging platforms, social media, or in-app browsers — may be sending traffic that experiences higher interaction delays.
Only app referrers that were active and measurable during the selected period are shown.
Why it matters: Users coming from in-app environments often have limited resources or unique constraints that can delay interactivity. If INP suffers here, the result is poor usability and missed engagement opportunities.
Healthy INP by App Referrer sample
Should you worry
In a healthy view, app referrers don’t cause delays in responsiveness. You may see familiar apps like WhatsApp, Instagram, or Facebook listed — but with INP values in the green.
This suggests your pages:
Load interactively even in embedded browser environments.
Avoid main-thread blocking scripts triggered by referrer-specific behavior.
Deliver a smooth first impression no matter where users came from.
Unhealthy INP by App Referrer sample
If INP shows red or yellow for specific app referrers, it likely means that users from those apps are struggling to interact with your site due to:
In-app browser limitations (e.g., throttled JavaScript).
Scripts or UI changes triggered only for app-referred sessions.
Extra personalization or tracking layers added for app traffic.
Blocked or degraded performance due to limited resources or viewport constraints.
Common culprits include:
Instagram and Facebook in-app browsers.
Messaging apps with slow link handling (e.g., Telegram, Messenger).
Traffic from embedded experiences in partner or affiliate apps.
Resolving unhealthy INP by App Referrer
Go-to action plan to resolve an unhealthy INP by App Referrer:
Ask Uxi to analyze your INP by App Referrer values and suggest improvements.
Use Filters to isolate app traffic causing lag on key templates.
Simulate INP of the suspected lens to see if fixing it will resolve the INP by App Referrer. If yes, this is where the resolution focus should be.
Use an automated INP optimization tool like INProve to improve your INP by App Referrer values.
Once you’ve improved INP, set an alert to be the first to know if it starts worsening again.
Try it yourself
Discover how your website performs with real user data.