Zero Trust alternative to Ngrok for tunnel with custom domain

"I develop in my local environment, how to let app in my phone connect to my local?"

Options:

1) "Ngrok" nice easy to use but limited some where.

2) "Expose" confusing setup. May be easy but never success yet.

3) Zero Trust

Nice & Free Tunnel service

https://developers.cloudflare.com/cloudflare-one/

- local environment auto connect to cloudflare

- you can bind ur personal domain to the tunnel use CNAME.

Free at all? Not really but the Free more powerful than Ngrok.

The biggest USP i interested on is Ngrok cannot have personal domain Zero Trust can. It works even the domain DNS not pointing to CloudFlare.