Start URL inspector
The start URL is baked into your app. Paste it here first and fix anything that would make every launch slower, wrongly tracked or blocked by Android.
What it checks
- https — Android apps block plain http unless they opt out.
- Private hosts — localhost, 10.x, 192.168.x only work on your network.
- Short links that redirect on every launch.
- Tracking parameters (utm_*, fbclid, gclid…) that would mislabel all app traffic.
- Secrets in the query — anything in the start URL is readable from the APK.
Then read choosing the right start URL for which page to start on.
FAQ
Does this tool fetch my site?
No. It only analyses the text of the URL in your browser, so it can't see redirects; open the URL on your phone to confirm where it lands.
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